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Finding the Fourth Proportional to 274,551.06, 411,663.80 and 84,955.28

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Solution

The fourth proportional to 274,551.06, 411,663.80 and 84,955.28 is: 127,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,551.06 : 411,663.80 = 84,955.28 : x
  2. Step 2: Convert to fraction form
    274,551.06/411,663.80 = 84,955.28/x
  3. Step 3: Cross multiply
    274,551.06x = 411,663.80 × 84,955.28
  4. Step 4: Simplify right side
    274,551.06x = 34,973,013,394.86
  5. Step 5: Solve for x
    x = 34,973,013,394.86/274,551.06
  6. Step 6: Final answer
    x = 127,382.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.