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Finding the Fourth Proportional to 485,123.52, 727,823.52 and 352,136.64

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Solution

The fourth proportional to 485,123.52, 727,823.52 and 352,136.64 is: 528,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,123.52 : 727,823.52 = 352,136.64 : x
  2. Step 2: Convert to fraction form
    485,123.52/727,823.52 = 352,136.64/x
  3. Step 3: Cross multiply
    485,123.52x = 727,823.52 × 352,136.64
  4. Step 4: Simplify right side
    485,123.52x = 256,293,328,845.77
  5. Step 5: Solve for x
    x = 256,293,328,845.77/485,123.52
  6. Step 6: Final answer
    x = 528,305.30

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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.