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Finding the Fourth Proportional to 482,800.63, 724,200.94 and 257,478.42

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Solution

The fourth proportional to 482,800.63, 724,200.94 and 257,478.42 is: 386,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,800.63 : 724,200.94 = 257,478.42 : x
  2. Step 2: Convert to fraction form
    482,800.63/724,200.94 = 257,478.42/x
  3. Step 3: Cross multiply
    482,800.63x = 724,200.94 × 257,478.42
  4. Step 4: Simplify right side
    482,800.63x = 186,466,114,437.41
  5. Step 5: Solve for x
    x = 186,466,114,437.41/482,800.63
  6. Step 6: Final answer
    x = 386,217.63

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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.