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Finding the Fourth Proportional to 356,329.20, 534,493.80 and 324,188.40

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Solution

The fourth proportional to 356,329.20, 534,493.80 and 324,188.40 is: 486,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,329.20 : 534,493.80 = 324,188.40 : x
  2. Step 2: Convert to fraction form
    356,329.20/534,493.80 = 324,188.40/x
  3. Step 3: Cross multiply
    356,329.20x = 534,493.80 × 324,188.40
  4. Step 4: Simplify right side
    356,329.20x = 173,276,689,831.92
  5. Step 5: Solve for x
    x = 173,276,689,831.92/356,329.20
  6. Step 6: Final answer
    x = 486,282.60

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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.