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Finding the Fourth Proportional to 140,752.88, 211,151.28 and 47,280.56

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Solution

The fourth proportional to 140,752.88, 211,151.28 and 47,280.56 is: 70,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,752.88 : 211,151.28 = 47,280.56 : x
  2. Step 2: Convert to fraction form
    140,752.88/211,151.28 = 47,280.56/x
  3. Step 3: Cross multiply
    140,752.88x = 211,151.28 × 47,280.56
  4. Step 4: Simplify right side
    140,752.88x = 9,983,350,763.12
  5. Step 5: Solve for x
    x = 9,983,350,763.12/140,752.88
  6. Step 6: Final answer
    x = 70,928.22

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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.