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Finding the Fourth Proportional to 354,864.60, 531,000.90 and 261,552.60

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Solution

The fourth proportional to 354,864.60, 531,000.90 and 261,552.60 is: 391,373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,864.60 : 531,000.90 = 261,552.60 : x
  2. Step 2: Convert to fraction form
    354,864.60/531,000.90 = 261,552.60/x
  3. Step 3: Cross multiply
    354,864.60x = 531,000.90 × 261,552.60
  4. Step 4: Simplify right side
    354,864.60x = 138,884,665,997.34
  5. Step 5: Solve for x
    x = 138,884,665,997.34/354,864.60
  6. Step 6: Final answer
    x = 391,373.68

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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.