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Finding the Fourth Proportional to 432,634.80, 648,952.20 and 255,487.80

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Solution

The fourth proportional to 432,634.80, 648,952.20 and 255,487.80 is: 383,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,634.80 : 648,952.20 = 255,487.80 : x
  2. Step 2: Convert to fraction form
    432,634.80/648,952.20 = 255,487.80/x
  3. Step 3: Cross multiply
    432,634.80x = 648,952.20 × 255,487.80
  4. Step 4: Simplify right side
    432,634.80x = 165,799,369,883.16
  5. Step 5: Solve for x
    x = 165,799,369,883.16/432,634.80
  6. Step 6: Final answer
    x = 383,231.70

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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.