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Finding the Fourth Proportional to 143,616.58, 215,424.70 and 38,432.81

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Solution

The fourth proportional to 143,616.58, 215,424.70 and 38,432.81 is: 57,649.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,616.58 : 215,424.70 = 38,432.81 : x
  2. Step 2: Convert to fraction form
    143,616.58/215,424.70 = 38,432.81/x
  3. Step 3: Cross multiply
    143,616.58x = 215,424.70 × 38,432.81
  4. Step 4: Simplify right side
    143,616.58x = 8,279,376,564.41
  5. Step 5: Solve for x
    x = 8,279,376,564.41/143,616.58
  6. Step 6: Final answer
    x = 57,649.17

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1.5x scale

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.