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Finding the Fourth Proportional to 218,616.13, 301,711.77 and 127,966.60

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Solution

The fourth proportional to 218,616.13, 301,711.77 and 127,966.60 is: 176,606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,616.13 : 301,711.77 = 127,966.60 : x
  2. Step 2: Convert to fraction form
    218,616.13/301,711.77 = 127,966.60/x
  3. Step 3: Cross multiply
    218,616.13x = 301,711.77 × 127,966.60
  4. Step 4: Simplify right side
    218,616.13x = 38,609,029,386.88
  5. Step 5: Solve for x
    x = 38,609,029,386.88/218,616.13
  6. Step 6: Final answer
    x = 176,606.50

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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.