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Finding the Fourth Proportional to 391,429.49, 540,163.49 and 230,294.93

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Solution

The fourth proportional to 391,429.49, 540,163.49 and 230,294.93 is: 317,801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,429.49 : 540,163.49 = 230,294.93 : x
  2. Step 2: Convert to fraction form
    391,429.49/540,163.49 = 230,294.93/x
  3. Step 3: Cross multiply
    391,429.49x = 540,163.49 × 230,294.93
  4. Step 4: Simplify right side
    391,429.49x = 124,396,909,265.81
  5. Step 5: Solve for x
    x = 124,396,909,265.81/391,429.49
  6. Step 6: Final answer
    x = 317,801.58

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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.