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Finding the Fourth Proportional to 487,511.70, 731,267.55 and 171,927.60

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Solution

The fourth proportional to 487,511.70, 731,267.55 and 171,927.60 is: 257,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,511.70 : 731,267.55 = 171,927.60 : x
  2. Step 2: Convert to fraction form
    487,511.70/731,267.55 = 171,927.60/x
  3. Step 3: Cross multiply
    487,511.70x = 731,267.55 × 171,927.60
  4. Step 4: Simplify right side
    487,511.70x = 125,725,074,829.38
  5. Step 5: Solve for x
    x = 125,725,074,829.38/487,511.70
  6. Step 6: Final answer
    x = 257,891.40

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Similar ratio
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1.5x scale

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.