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Finding the Fourth Proportional to 208,853.88, 288,218.61 and 113,360.61

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Solution

The fourth proportional to 208,853.88, 288,218.61 and 113,360.61 is: 156,437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,853.88 : 288,218.61 = 113,360.61 : x
  2. Step 2: Convert to fraction form
    208,853.88/288,218.61 = 113,360.61/x
  3. Step 3: Cross multiply
    208,853.88x = 288,218.61 × 113,360.61
  4. Step 4: Simplify right side
    208,853.88x = 32,672,637,442.95
  5. Step 5: Solve for x
    x = 32,672,637,442.95/208,853.88
  6. Step 6: Final answer
    x = 156,437.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.