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Finding the Fourth Proportional to 215,071.52, 320,792.32 and 186,769.04

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Solution

The fourth proportional to 215,071.52, 320,792.32 and 186,769.04 is: 278,577.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,071.52 : 320,792.32 = 186,769.04 : x
  2. Step 2: Convert to fraction form
    215,071.52/320,792.32 = 186,769.04/x
  3. Step 3: Cross multiply
    215,071.52x = 320,792.32 × 186,769.04
  4. Step 4: Simplify right side
    215,071.52x = 59,914,072,275.27
  5. Step 5: Solve for x
    x = 59,914,072,275.27/215,071.52
  6. Step 6: Final answer
    x = 278,577.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.