Home / 143,615.30-215,422.61-38,434.28

Finding the Fourth Proportional to 143,615.30, 215,422.61 and 38,434.28

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Solution

The fourth proportional to 143,615.30, 215,422.61 and 38,434.28 is: 57,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,615.30 : 215,422.61 = 38,434.28 : x
  2. Step 2: Convert to fraction form
    143,615.30/215,422.61 = 38,434.28/x
  3. Step 3: Cross multiply
    143,615.30x = 215,422.61 × 38,434.28
  4. Step 4: Simplify right side
    143,615.30x = 8,279,611,641.79
  5. Step 5: Solve for x
    x = 8,279,611,641.79/143,615.30
  6. Step 6: Final answer
    x = 57,651.32

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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.