Home / 643,685.60-965,613.20-238,822.72

Finding the Fourth Proportional to 643,685.60, 965,613.20 and 238,822.72

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Solution

The fourth proportional to 643,685.60, 965,613.20 and 238,822.72 is: 358,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,685.60 : 965,613.20 = 238,822.72 : x
  2. Step 2: Convert to fraction form
    643,685.60/965,613.20 = 238,822.72/x
  3. Step 3: Cross multiply
    643,685.60x = 965,613.20 × 238,822.72
  4. Step 4: Simplify right side
    643,685.60x = 230,610,370,891.90
  5. Step 5: Solve for x
    x = 230,610,370,891.90/643,685.60
  6. Step 6: Final answer
    x = 358,265.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.