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Finding the Fourth Proportional to 143,568.74, 215,384.25 and 43,726.32

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Solution

The fourth proportional to 143,568.74, 215,384.25 and 43,726.32 is: 65,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,568.74 : 215,384.25 = 43,726.32 : x
  2. Step 2: Convert to fraction form
    143,568.74/215,384.25 = 43,726.32/x
  3. Step 3: Cross multiply
    143,568.74x = 215,384.25 × 43,726.32
  4. Step 4: Simplify right side
    143,568.74x = 9,417,960,638.46
  5. Step 5: Solve for x
    x = 9,417,960,638.46/143,568.74
  6. Step 6: Final answer
    x = 65,598.96

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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.