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Finding the Fourth Proportional to 391,427.61, 540,160.92 and 230,293.04

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Solution

The fourth proportional to 391,427.61, 540,160.92 and 230,293.04 is: 317,798.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,427.61 : 540,160.92 = 230,293.04 : x
  2. Step 2: Convert to fraction form
    391,427.61/540,160.92 = 230,293.04/x
  3. Step 3: Cross multiply
    391,427.61x = 540,160.92 × 230,293.04
  4. Step 4: Simplify right side
    391,427.61x = 124,395,297,655.19
  5. Step 5: Solve for x
    x = 124,395,297,655.19/391,427.61
  6. Step 6: Final answer
    x = 317,798.99

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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.