Home / 272,345.90-408,518.24-129,758.36

Finding the Fourth Proportional to 272,345.90, 408,518.24 and 129,758.36

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Solution

The fourth proportional to 272,345.90, 408,518.24 and 129,758.36 is: 194,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,345.90 : 408,518.24 = 129,758.36 : x
  2. Step 2: Convert to fraction form
    272,345.90/408,518.24 = 129,758.36/x
  3. Step 3: Cross multiply
    272,345.90x = 408,518.24 × 129,758.36
  4. Step 4: Simplify right side
    272,345.90x = 53,008,654,161.10
  5. Step 5: Solve for x
    x = 53,008,654,161.10/272,345.90
  6. Step 6: Final answer
    x = 194,637.24

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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.