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Finding the Fourth Proportional to 292,079.80, 437,147.70 and 211,889.80

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Solution

The fourth proportional to 292,079.80, 437,147.70 and 211,889.80 is: 317,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,079.80 : 437,147.70 = 211,889.80 : x
  2. Step 2: Convert to fraction form
    292,079.80/437,147.70 = 211,889.80/x
  3. Step 3: Cross multiply
    292,079.80x = 437,147.70 × 211,889.80
  4. Step 4: Simplify right side
    292,079.80x = 92,627,138,723.46
  5. Step 5: Solve for x
    x = 92,627,138,723.46/292,079.80
  6. Step 6: Final answer
    x = 317,129.56

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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.