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Finding the Fourth Proportional to 143,807.32, 215,710.80 and 38,626.21

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Solution

The fourth proportional to 143,807.32, 215,710.80 and 38,626.21 is: 57,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,807.32 : 215,710.80 = 38,626.21 : x
  2. Step 2: Convert to fraction form
    143,807.32/215,710.80 = 38,626.21/x
  3. Step 3: Cross multiply
    143,807.32x = 215,710.80 × 38,626.21
  4. Step 4: Simplify right side
    143,807.32x = 8,332,090,660.07
  5. Step 5: Solve for x
    x = 8,332,090,660.07/143,807.32
  6. Step 6: Final answer
    x = 57,939.27

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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.