Home / 753,159.12-1,129,738.45-220,680

Finding the Fourth Proportional to 753,159.12, 1,129,738.45 and 220,680

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Solution

The fourth proportional to 753,159.12, 1,129,738.45 and 220,680 is: 331,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,159.12 : 1,129,738.45 = 220,680 : x
  2. Step 2: Convert to fraction form
    753,159.12/1,129,738.45 = 220,680/x
  3. Step 3: Cross multiply
    753,159.12x = 1,129,738.45 × 220,680
  4. Step 4: Simplify right side
    753,159.12x = 249,310,681,146
  5. Step 5: Solve for x
    x = 249,310,681,146/753,159.12
  6. Step 6: Final answer
    x = 331,019.93

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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.