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Finding the Fourth Proportional to 218,146.16, 300,940.66 and 127,505.95

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Solution

The fourth proportional to 218,146.16, 300,940.66 and 127,505.95 is: 175,899.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,146.16 : 300,940.66 = 127,505.95 : x
  2. Step 2: Convert to fraction form
    218,146.16/300,940.66 = 127,505.95/x
  3. Step 3: Cross multiply
    218,146.16x = 300,940.66 × 127,505.95
  4. Step 4: Simplify right side
    218,146.16x = 38,371,724,746.93
  5. Step 5: Solve for x
    x = 38,371,724,746.93/218,146.16
  6. Step 6: Final answer
    x = 175,899.15

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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.