Home / 385,342,950.85-531,773,271.72-209,130,946.20

Finding the Fourth Proportional to 385,342,950.85, 531,773,271.72 and 209,130,946.20

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Solution

The fourth proportional to 385,342,950.85, 531,773,271.72 and 209,130,946.20 is: 288,600,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,342,950.85 : 531,773,271.72 = 209,130,946.20 : x
  2. Step 2: Convert to fraction form
    385,342,950.85/531,773,271.72 = 209,130,946.20/x
  3. Step 3: Cross multiply
    385,342,950.85x = 531,773,271.72 × 209,130,946.20
  4. Step 4: Simplify right side
    385,342,950.85x = 111,210,247,478,673,296
  5. Step 5: Solve for x
    x = 111,210,247,478,673,296/385,342,950.85
  6. Step 6: Final answer
    x = 288,600,705.51

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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.