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Finding the Fourth Proportional to 391,763.52, 540,817.56 and 230,567.04

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Solution

The fourth proportional to 391,763.52, 540,817.56 and 230,567.04 is: 318,290.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,763.52 : 540,817.56 = 230,567.04 : x
  2. Step 2: Convert to fraction form
    391,763.52/540,817.56 = 230,567.04/x
  3. Step 3: Cross multiply
    391,763.52x = 540,817.56 × 230,567.04
  4. Step 4: Simplify right side
    391,763.52x = 124,694,703,989.22
  5. Step 5: Solve for x
    x = 124,694,703,989.22/391,763.52
  6. Step 6: Final answer
    x = 318,290.75

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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.