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Finding the Fourth Proportional to 143,643.44, 215,476.68 and 38,461.52

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Solution

The fourth proportional to 143,643.44, 215,476.68 and 38,461.52 is: 57,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,643.44 : 215,476.68 = 38,461.52 : x
  2. Step 2: Convert to fraction form
    143,643.44/215,476.68 = 38,461.52/x
  3. Step 3: Cross multiply
    143,643.44x = 215,476.68 × 38,461.52
  4. Step 4: Simplify right side
    143,643.44x = 8,287,560,637.35
  5. Step 5: Solve for x
    x = 8,287,560,637.35/143,643.44
  6. Step 6: Final answer
    x = 57,695.36

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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.