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Finding the Fourth Proportional to 587,140.50, 880,710.75 and 143,908.50

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Solution

The fourth proportional to 587,140.50, 880,710.75 and 143,908.50 is: 215,862.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,140.50 : 880,710.75 = 143,908.50 : x
  2. Step 2: Convert to fraction form
    587,140.50/880,710.75 = 143,908.50/x
  3. Step 3: Cross multiply
    587,140.50x = 880,710.75 × 143,908.50
  4. Step 4: Simplify right side
    587,140.50x = 126,741,762,966.38
  5. Step 5: Solve for x
    x = 126,741,762,966.38/587,140.50
  6. Step 6: Final answer
    x = 215,862.75

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Similar ratio
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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.