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Finding the Fourth Proportional to 372,980.95, 559,959.26 and 221,454.66

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Solution

The fourth proportional to 372,980.95, 559,959.26 and 221,454.66 is: 332,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,980.95 : 559,959.26 = 221,454.66 : x
  2. Step 2: Convert to fraction form
    372,980.95/559,959.26 = 221,454.66/x
  3. Step 3: Cross multiply
    372,980.95x = 559,959.26 × 221,454.66
  4. Step 4: Simplify right side
    372,980.95x = 124,005,587,537.15
  5. Step 5: Solve for x
    x = 124,005,587,537.15/372,980.95
  6. Step 6: Final answer
    x = 332,471.64

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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.