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Finding the Fourth Proportional to 461,240.56, 636,487.68 and 257,312.80

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Solution

The fourth proportional to 461,240.56, 636,487.68 and 257,312.80 is: 355,078.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,240.56 : 636,487.68 = 257,312.80 : x
  2. Step 2: Convert to fraction form
    461,240.56/636,487.68 = 257,312.80/x
  3. Step 3: Cross multiply
    461,240.56x = 636,487.68 × 257,312.80
  4. Step 4: Simplify right side
    461,240.56x = 163,776,427,106.30
  5. Step 5: Solve for x
    x = 163,776,427,106.30/461,240.56
  6. Step 6: Final answer
    x = 355,078.11

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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.