Home / 272,346.90-408,519.73-129,759.36

Finding the Fourth Proportional to 272,346.90, 408,519.73 and 129,759.36

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Solution

The fourth proportional to 272,346.90, 408,519.73 and 129,759.36 is: 194,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,346.90 : 408,519.73 = 129,759.36 : x
  2. Step 2: Convert to fraction form
    272,346.90/408,519.73 = 129,759.36/x
  3. Step 3: Cross multiply
    272,346.90x = 408,519.73 × 129,759.36
  4. Step 4: Simplify right side
    272,346.90x = 53,009,258,712.17
  5. Step 5: Solve for x
    x = 53,009,258,712.17/272,346.90
  6. Step 6: Final answer
    x = 194,638.74

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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.