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Finding the Fourth Proportional to 218,209.63, 301,124.56 and 126,332.78

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Solution

The fourth proportional to 218,209.63, 301,124.56 and 126,332.78 is: 174,336.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,209.63 : 301,124.56 = 126,332.78 : x
  2. Step 2: Convert to fraction form
    218,209.63/301,124.56 = 126,332.78/x
  3. Step 3: Cross multiply
    218,209.63x = 301,124.56 × 126,332.78
  4. Step 4: Simplify right side
    218,209.63x = 38,041,902,791.08
  5. Step 5: Solve for x
    x = 38,041,902,791.08/218,209.63
  6. Step 6: Final answer
    x = 174,336.50

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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.