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Finding the Fourth Proportional to 143,349.85, 215,051.90 and 47,292.57

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Solution

The fourth proportional to 143,349.85, 215,051.90 and 47,292.57 is: 70,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,349.85 : 215,051.90 = 47,292.57 : x
  2. Step 2: Convert to fraction form
    143,349.85/215,051.90 = 47,292.57/x
  3. Step 3: Cross multiply
    143,349.85x = 215,051.90 × 47,292.57
  4. Step 4: Simplify right side
    143,349.85x = 10,170,357,034.38
  5. Step 5: Solve for x
    x = 10,170,357,034.38/143,349.85
  6. Step 6: Final answer
    x = 70,947.80

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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.