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Finding the Fourth Proportional to 143,405.52, 215,108.18 and 43,565.32

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Solution

The fourth proportional to 143,405.52, 215,108.18 and 43,565.32 is: 65,347.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,405.52 : 215,108.18 = 43,565.32 : x
  2. Step 2: Convert to fraction form
    143,405.52/215,108.18 = 43,565.32/x
  3. Step 3: Cross multiply
    143,405.52x = 215,108.18 × 43,565.32
  4. Step 4: Simplify right side
    143,405.52x = 9,371,256,696.32
  5. Step 5: Solve for x
    x = 9,371,256,696.32/143,405.52
  6. Step 6: Final answer
    x = 65,347.95

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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.