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Finding the Fourth Proportional to 217,874.51, 300,620.18 and 127,189.32

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Solution

The fourth proportional to 217,874.51, 300,620.18 and 127,189.32 is: 175,494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,874.51 : 300,620.18 = 127,189.32 : x
  2. Step 2: Convert to fraction form
    217,874.51/300,620.18 = 127,189.32/x
  3. Step 3: Cross multiply
    217,874.51x = 300,620.18 × 127,189.32
  4. Step 4: Simplify right side
    217,874.51x = 38,235,676,272.48
  5. Step 5: Solve for x
    x = 38,235,676,272.48/217,874.51
  6. Step 6: Final answer
    x = 175,494.03

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1.5x scale

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.