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Finding the Fourth Proportional to 587,288.80, 881,278.80 and 213,349.60

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Solution

The fourth proportional to 587,288.80, 881,278.80 and 213,349.60 is: 320,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,288.80 : 881,278.80 = 213,349.60 : x
  2. Step 2: Convert to fraction form
    587,288.80/881,278.80 = 213,349.60/x
  3. Step 3: Cross multiply
    587,288.80x = 881,278.80 × 213,349.60
  4. Step 4: Simplify right side
    587,288.80x = 188,020,479,468.48
  5. Step 5: Solve for x
    x = 188,020,479,468.48/587,288.80
  6. Step 6: Final answer
    x = 320,149.95

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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.