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Finding the Fourth Proportional to 208,793.50, 288,135.80 and 113,300.17

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Solution

The fourth proportional to 208,793.50, 288,135.80 and 113,300.17 is: 156,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,793.50 : 288,135.80 = 113,300.17 : x
  2. Step 2: Convert to fraction form
    208,793.50/288,135.80 = 113,300.17/x
  3. Step 3: Cross multiply
    208,793.50x = 288,135.80 × 113,300.17
  4. Step 4: Simplify right side
    208,793.50x = 32,645,834,261.12
  5. Step 5: Solve for x
    x = 32,645,834,261.12/208,793.50
  6. Step 6: Final answer
    x = 156,354.65

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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.