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Finding the Fourth Proportional to 310,630.73, 465,263.11 and 256,711.61

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Solution

The fourth proportional to 310,630.73, 465,263.11 and 256,711.61 is: 384,502.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,630.73 : 465,263.11 = 256,711.61 : x
  2. Step 2: Convert to fraction form
    310,630.73/465,263.11 = 256,711.61/x
  3. Step 3: Cross multiply
    310,630.73x = 465,263.11 × 256,711.61
  4. Step 4: Simplify right side
    310,630.73x = 119,438,442,563.09
  5. Step 5: Solve for x
    x = 119,438,442,563.09/310,630.73
  6. Step 6: Final answer
    x = 384,502.98

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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.