Home / 345,407.12-517,142.68-260,901.36

Finding the Fourth Proportional to 345,407.12, 517,142.68 and 260,901.36

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Solution

The fourth proportional to 345,407.12, 517,142.68 and 260,901.36 is: 390,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,407.12 : 517,142.68 = 260,901.36 : x
  2. Step 2: Convert to fraction form
    345,407.12/517,142.68 = 260,901.36/x
  3. Step 3: Cross multiply
    345,407.12x = 517,142.68 × 260,901.36
  4. Step 4: Simplify right side
    345,407.12x = 134,923,228,526.05
  5. Step 5: Solve for x
    x = 134,923,228,526.05/345,407.12
  6. Step 6: Final answer
    x = 390,620.87

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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.