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Finding the Fourth Proportional to 209,327.80, 288,770.80 and 124,384.72

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Solution

The fourth proportional to 209,327.80, 288,770.80 and 124,384.72 is: 171,590.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,327.80 : 288,770.80 = 124,384.72 : x
  2. Step 2: Convert to fraction form
    209,327.80/288,770.80 = 124,384.72/x
  3. Step 3: Cross multiply
    209,327.80x = 288,770.80 × 124,384.72
  4. Step 4: Simplify right side
    209,327.80x = 35,918,675,102.18
  5. Step 5: Solve for x
    x = 35,918,675,102.18/209,327.80
  6. Step 6: Final answer
    x = 171,590.56

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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.