Home / 427,830.76-641,684.70-132,304.36

Finding the Fourth Proportional to 427,830.76, 641,684.70 and 132,304.36

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Solution

The fourth proportional to 427,830.76, 641,684.70 and 132,304.36 is: 198,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,830.76 : 641,684.70 = 132,304.36 : x
  2. Step 2: Convert to fraction form
    427,830.76/641,684.70 = 132,304.36/x
  3. Step 3: Cross multiply
    427,830.76x = 641,684.70 × 132,304.36
  4. Step 4: Simplify right side
    427,830.76x = 84,897,683,555.29
  5. Step 5: Solve for x
    x = 84,897,683,555.29/427,830.76
  6. Step 6: Final answer
    x = 198,437.54

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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.