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Finding the Fourth Proportional to 518,061.38, 777,135.80 and 144,084.38

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Solution

The fourth proportional to 518,061.38, 777,135.80 and 144,084.38 is: 216,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,061.38 : 777,135.80 = 144,084.38 : x
  2. Step 2: Convert to fraction form
    518,061.38/777,135.80 = 144,084.38/x
  3. Step 3: Cross multiply
    518,061.38x = 777,135.80 × 144,084.38
  4. Step 4: Simplify right side
    518,061.38x = 111,973,126,393.34
  5. Step 5: Solve for x
    x = 111,973,126,393.34/518,061.38
  6. Step 6: Final answer
    x = 216,138.73

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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.