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Finding the Fourth Proportional to 218,404.69, 301,348.61 and 122,876.53

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Solution

The fourth proportional to 218,404.69, 301,348.61 and 122,876.53 is: 169,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,404.69 : 301,348.61 = 122,876.53 : x
  2. Step 2: Convert to fraction form
    218,404.69/301,348.61 = 122,876.53/x
  3. Step 3: Cross multiply
    218,404.69x = 301,348.61 × 122,876.53
  4. Step 4: Simplify right side
    218,404.69x = 37,028,671,209.93
  5. Step 5: Solve for x
    x = 37,028,671,209.93/218,404.69
  6. Step 6: Final answer
    x = 169,541.56

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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.