Home / 753,138.72-1,129,863.60-220,677.12

Finding the Fourth Proportional to 753,138.72, 1,129,863.60 and 220,677.12

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Solution

The fourth proportional to 753,138.72, 1,129,863.60 and 220,677.12 is: 331,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,138.72 : 1,129,863.60 = 220,677.12 : x
  2. Step 2: Convert to fraction form
    753,138.72/1,129,863.60 = 220,677.12/x
  3. Step 3: Cross multiply
    753,138.72x = 1,129,863.60 × 220,677.12
  4. Step 4: Simplify right side
    753,138.72x = 249,335,045,240.83
  5. Step 5: Solve for x
    x = 249,335,045,240.83/753,138.72
  6. Step 6: Final answer
    x = 331,061.25

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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.