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Finding the Fourth Proportional to 438,759.57, 658,139.36 and 106,335.57

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Solution

The fourth proportional to 438,759.57, 658,139.36 and 106,335.57 is: 159,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,759.57 : 658,139.36 = 106,335.57 : x
  2. Step 2: Convert to fraction form
    438,759.57/658,139.36 = 106,335.57/x
  3. Step 3: Cross multiply
    438,759.57x = 658,139.36 × 106,335.57
  4. Step 4: Simplify right side
    438,759.57x = 69,983,623,453.36
  5. Step 5: Solve for x
    x = 69,983,623,453.36/438,759.57
  6. Step 6: Final answer
    x = 159,503.36

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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.