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Finding the Fourth Proportional to 543,920.80, 750,504.72 and 317,575.84

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Solution

The fourth proportional to 543,920.80, 750,504.72 and 317,575.84 is: 438,192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,920.80 : 750,504.72 = 317,575.84 : x
  2. Step 2: Convert to fraction form
    543,920.80/750,504.72 = 317,575.84/x
  3. Step 3: Cross multiply
    543,920.80x = 750,504.72 × 317,575.84
  4. Step 4: Simplify right side
    543,920.80x = 238,342,166,877.97
  5. Step 5: Solve for x
    x = 238,342,166,877.97/543,920.80
  6. Step 6: Final answer
    x = 438,192.78

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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.