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Finding the Fourth Proportional to 547,098.12, 755,121.36 and 320,816.52

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Solution

The fourth proportional to 547,098.12, 755,121.36 and 320,816.52 is: 442,800.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,098.12 : 755,121.36 = 320,816.52 : x
  2. Step 2: Convert to fraction form
    547,098.12/755,121.36 = 320,816.52/x
  3. Step 3: Cross multiply
    547,098.12x = 755,121.36 × 320,816.52
  4. Step 4: Simplify right side
    547,098.12x = 242,255,406,892.87
  5. Step 5: Solve for x
    x = 242,255,406,892.87/547,098.12
  6. Step 6: Final answer
    x = 442,800.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.