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Finding the Fourth Proportional to 256,475.10, 384,712.65 and 235,479.90

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Solution

The fourth proportional to 256,475.10, 384,712.65 and 235,479.90 is: 353,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,475.10 : 384,712.65 = 235,479.90 : x
  2. Step 2: Convert to fraction form
    256,475.10/384,712.65 = 235,479.90/x
  3. Step 3: Cross multiply
    256,475.10x = 384,712.65 × 235,479.90
  4. Step 4: Simplify right side
    256,475.10x = 90,592,096,350.74
  5. Step 5: Solve for x
    x = 90,592,096,350.74/256,475.10
  6. Step 6: Final answer
    x = 353,219.85

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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.