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Finding the Fourth Proportional to 223,306.76, 308,159.60 and 121,333.78

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Solution

The fourth proportional to 223,306.76, 308,159.60 and 121,333.78 is: 167,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,306.76 : 308,159.60 = 121,333.78 : x
  2. Step 2: Convert to fraction form
    223,306.76/308,159.60 = 121,333.78/x
  3. Step 3: Cross multiply
    223,306.76x = 308,159.60 × 121,333.78
  4. Step 4: Simplify right side
    223,306.76x = 37,390,169,275.02
  5. Step 5: Solve for x
    x = 37,390,169,275.02/223,306.76
  6. Step 6: Final answer
    x = 167,438.59

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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.