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Finding the Fourth Proportional to 424,208.28, 636,312.60 and 124,688.88

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Solution

The fourth proportional to 424,208.28, 636,312.60 and 124,688.88 is: 187,033.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,208.28 : 636,312.60 = 124,688.88 : x
  2. Step 2: Convert to fraction form
    424,208.28/636,312.60 = 124,688.88/x
  3. Step 3: Cross multiply
    424,208.28x = 636,312.60 × 124,688.88
  4. Step 4: Simplify right side
    424,208.28x = 79,341,105,423.89
  5. Step 5: Solve for x
    x = 79,341,105,423.89/424,208.28
  6. Step 6: Final answer
    x = 187,033.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.