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Finding the Fourth Proportional to 356,327.20, 534,490.80 and 324,186.40

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Solution

The fourth proportional to 356,327.20, 534,490.80 and 324,186.40 is: 486,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,327.20 : 534,490.80 = 324,186.40 : x
  2. Step 2: Convert to fraction form
    356,327.20/534,490.80 = 324,186.40/x
  3. Step 3: Cross multiply
    356,327.20x = 534,490.80 × 324,186.40
  4. Step 4: Simplify right side
    356,327.20x = 173,274,648,285.12
  5. Step 5: Solve for x
    x = 173,274,648,285.12/356,327.20
  6. Step 6: Final answer
    x = 486,279.60

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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.