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Finding the Fourth Proportional to 229,117.41, 316,167.76 and 138,419.79

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Solution

The fourth proportional to 229,117.41, 316,167.76 and 138,419.79 is: 191,010.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,117.41 : 316,167.76 = 138,419.79 : x
  2. Step 2: Convert to fraction form
    229,117.41/316,167.76 = 138,419.79/x
  3. Step 3: Cross multiply
    229,117.41x = 316,167.76 × 138,419.79
  4. Step 4: Simplify right side
    229,117.41x = 43,763,873,152.75
  5. Step 5: Solve for x
    x = 43,763,873,152.75/229,117.41
  6. Step 6: Final answer
    x = 191,010.68

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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.