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Finding the Fourth Proportional to 372,288.54, 558,432.90 and 260,187.72

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Solution

The fourth proportional to 372,288.54, 558,432.90 and 260,187.72 is: 390,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,288.54 : 558,432.90 = 260,187.72 : x
  2. Step 2: Convert to fraction form
    372,288.54/558,432.90 = 260,187.72/x
  3. Step 3: Cross multiply
    372,288.54x = 558,432.90 × 260,187.72
  4. Step 4: Simplify right side
    372,288.54x = 145,297,383,023.99
  5. Step 5: Solve for x
    x = 145,297,383,023.99/372,288.54
  6. Step 6: Final answer
    x = 390,281.64

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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.