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Finding the Fourth Proportional to 143,507.58, 215,280.17 and 47,412.87

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Solution

The fourth proportional to 143,507.58, 215,280.17 and 47,412.87 is: 71,125.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,507.58 : 215,280.17 = 47,412.87 : x
  2. Step 2: Convert to fraction form
    143,507.58/215,280.17 = 47,412.87/x
  3. Step 3: Cross multiply
    143,507.58x = 215,280.17 × 47,412.87
  4. Step 4: Simplify right side
    143,507.58x = 10,207,050,713.79
  5. Step 5: Solve for x
    x = 10,207,050,713.79/143,507.58
  6. Step 6: Final answer
    x = 71,125.52

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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.