Home / 385,393,665,853.65-531,812,078,522.91-222,823,742,175.45

Finding the Fourth Proportional to 385,393,665,853.65, 531,812,078,522.91 and 222,823,742,175.45

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Solution

The fourth proportional to 385,393,665,853.65, 531,812,078,522.91 and 222,823,742,175.45 is: 307,478,736,600.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,393,665,853.65 : 531,812,078,522.91 = 222,823,742,175.45 : x
  2. Step 2: Convert to fraction form
    385,393,665,853.65/531,812,078,522.91 = 222,823,742,175.45/x
  3. Step 3: Cross multiply
    385,393,665,853.65x = 531,812,078,522.91 × 222,823,742,175.45
  4. Step 4: Simplify right side
    385,393,665,853.65x = 118,500,357,470,579,066,929,152
  5. Step 5: Solve for x
    x = 118,500,357,470,579,066,929,152/385,393,665,853.65
  6. Step 6: Final answer
    x = 307,478,736,600.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.