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Finding the Fourth Proportional to 547,732.18, 755,740.86 and 318,153.06

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Solution

The fourth proportional to 547,732.18, 755,740.86 and 318,153.06 is: 438,975.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,732.18 : 755,740.86 = 318,153.06 : x
  2. Step 2: Convert to fraction form
    547,732.18/755,740.86 = 318,153.06/x
  3. Step 3: Cross multiply
    547,732.18x = 755,740.86 × 318,153.06
  4. Step 4: Simplify right side
    547,732.18x = 240,441,267,176.03
  5. Step 5: Solve for x
    x = 240,441,267,176.03/547,732.18
  6. Step 6: Final answer
    x = 438,975.97

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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.