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Finding the Fourth Proportional to 208,899.19, 288,279.30 and 113,403.97

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Solution

The fourth proportional to 208,899.19, 288,279.30 and 113,403.97 is: 156,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,899.19 : 288,279.30 = 113,403.97 : x
  2. Step 2: Convert to fraction form
    208,899.19/288,279.30 = 113,403.97/x
  3. Step 3: Cross multiply
    208,899.19x = 288,279.30 × 113,403.97
  4. Step 4: Simplify right side
    208,899.19x = 32,692,017,088.82
  5. Step 5: Solve for x
    x = 32,692,017,088.82/208,899.19
  6. Step 6: Final answer
    x = 156,496.62

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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.