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Finding the Fourth Proportional to 492,431.10, 738,646.65 and 256,235.10

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Solution

The fourth proportional to 492,431.10, 738,646.65 and 256,235.10 is: 384,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,431.10 : 738,646.65 = 256,235.10 : x
  2. Step 2: Convert to fraction form
    492,431.10/738,646.65 = 256,235.10/x
  3. Step 3: Cross multiply
    492,431.10x = 738,646.65 × 256,235.10
  4. Step 4: Simplify right side
    492,431.10x = 189,267,198,227.42
  5. Step 5: Solve for x
    x = 189,267,198,227.42/492,431.10
  6. Step 6: Final answer
    x = 384,352.65

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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.