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Finding the Fourth Proportional to 547,154.92, 755,076.90 and 320,804.20

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Solution

The fourth proportional to 547,154.92, 755,076.90 and 320,804.20 is: 442,711.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,154.92 : 755,076.90 = 320,804.20 : x
  2. Step 2: Convert to fraction form
    547,154.92/755,076.90 = 320,804.20/x
  3. Step 3: Cross multiply
    547,154.92x = 755,076.90 × 320,804.20
  4. Step 4: Simplify right side
    547,154.92x = 242,231,840,842.98
  5. Step 5: Solve for x
    x = 242,231,840,842.98/547,154.92
  6. Step 6: Final answer
    x = 442,711.62

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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.