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Finding the Fourth Proportional to 201,680.80, 278,703.12 and 151,292.32

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Solution

The fourth proportional to 201,680.80, 278,703.12 and 151,292.32 is: 209,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,680.80 : 278,703.12 = 151,292.32 : x
  2. Step 2: Convert to fraction form
    201,680.80/278,703.12 = 151,292.32/x
  3. Step 3: Cross multiply
    201,680.80x = 278,703.12 × 151,292.32
  4. Step 4: Simplify right side
    201,680.80x = 42,165,641,616.04
  5. Step 5: Solve for x
    x = 42,165,641,616.04/201,680.80
  6. Step 6: Final answer
    x = 209,071.17

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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.