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Finding the Fourth Proportional to 354,439.98, 529,400.36 and 320,654.34

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Solution

The fourth proportional to 354,439.98, 529,400.36 and 320,654.34 is: 478,937.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,439.98 : 529,400.36 = 320,654.34 : x
  2. Step 2: Convert to fraction form
    354,439.98/529,400.36 = 320,654.34/x
  3. Step 3: Cross multiply
    354,439.98x = 529,400.36 × 320,654.34
  4. Step 4: Simplify right side
    354,439.98x = 169,754,523,833.20
  5. Step 5: Solve for x
    x = 169,754,523,833.20/354,439.98
  6. Step 6: Final answer
    x = 478,937.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.