Home / 279,145.65-385,219.93-151,823.37

Finding the Fourth Proportional to 279,145.65, 385,219.93 and 151,823.37

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Solution

The fourth proportional to 279,145.65, 385,219.93 and 151,823.37 is: 209,515.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,145.65 : 385,219.93 = 151,823.37 : x
  2. Step 2: Convert to fraction form
    279,145.65/385,219.93 = 151,823.37/x
  3. Step 3: Cross multiply
    279,145.65x = 385,219.93 × 151,823.37
  4. Step 4: Simplify right side
    279,145.65x = 58,485,387,963.76
  5. Step 5: Solve for x
    x = 58,485,387,963.76/279,145.65
  6. Step 6: Final answer
    x = 209,515.67

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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.