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Finding the Fourth Proportional to 310,630.35, 465,262.55 and 256,711.24

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Solution

The fourth proportional to 310,630.35, 465,262.55 and 256,711.24 is: 384,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,630.35 : 465,262.55 = 256,711.24 : x
  2. Step 2: Convert to fraction form
    310,630.35/465,262.55 = 256,711.24/x
  3. Step 3: Cross multiply
    310,630.35x = 465,262.55 × 256,711.24
  4. Step 4: Simplify right side
    310,630.35x = 119,438,126,396.75
  5. Step 5: Solve for x
    x = 119,438,126,396.75/310,630.35
  6. Step 6: Final answer
    x = 384,502.43

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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.