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Finding the Fourth Proportional to 256,472.10, 384,708.15 and 235,476.90

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Solution

The fourth proportional to 256,472.10, 384,708.15 and 235,476.90 is: 353,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,472.10 : 384,708.15 = 235,476.90 : x
  2. Step 2: Convert to fraction form
    256,472.10/384,708.15 = 235,476.90/x
  3. Step 3: Cross multiply
    256,472.10x = 384,708.15 × 235,476.90
  4. Step 4: Simplify right side
    256,472.10x = 90,589,882,566.74
  5. Step 5: Solve for x
    x = 90,589,882,566.74/256,472.10
  6. Step 6: Final answer
    x = 353,215.35

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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.