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Finding the Fourth Proportional to 385,156.80, 531,500.40 and 224,012.16

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Solution

The fourth proportional to 385,156.80, 531,500.40 and 224,012.16 is: 309,127.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,156.80 : 531,500.40 = 224,012.16 : x
  2. Step 2: Convert to fraction form
    385,156.80/531,500.40 = 224,012.16/x
  3. Step 3: Cross multiply
    385,156.80x = 531,500.40 × 224,012.16
  4. Step 4: Simplify right side
    385,156.80x = 119,062,552,644.86
  5. Step 5: Solve for x
    x = 119,062,552,644.86/385,156.80
  6. Step 6: Final answer
    x = 309,127.48

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1.5x scale

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.