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Finding the Fourth Proportional to 533,291.91, 735,954.42 and 318,391.89

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Solution

The fourth proportional to 533,291.91, 735,954.42 and 318,391.89 is: 439,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,291.91 : 735,954.42 = 318,391.89 : x
  2. Step 2: Convert to fraction form
    533,291.91/735,954.42 = 318,391.89/x
  3. Step 3: Cross multiply
    533,291.91x = 735,954.42 × 318,391.89
  4. Step 4: Simplify right side
    533,291.91x = 234,321,918,737.65
  5. Step 5: Solve for x
    x = 234,321,918,737.65/533,291.91
  6. Step 6: Final answer
    x = 439,387.72

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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.