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Finding the Fourth Proportional to 385,293.61, 531,812.04 and 224,179.78

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Solution

The fourth proportional to 385,293.61, 531,812.04 and 224,179.78 is: 309,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,293.61 : 531,812.04 = 224,179.78 : x
  2. Step 2: Convert to fraction form
    385,293.61/531,812.04 = 224,179.78/x
  3. Step 3: Cross multiply
    385,293.61x = 531,812.04 × 224,179.78
  4. Step 4: Simplify right side
    385,293.61x = 119,221,506,128.55
  5. Step 5: Solve for x
    x = 119,221,506,128.55/385,293.61
  6. Step 6: Final answer
    x = 309,430.27

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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.