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Finding the Fourth Proportional to 243,358.32, 335,801.28 and 135,914.64

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Solution

The fourth proportional to 243,358.32, 335,801.28 and 135,914.64 is: 187,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,358.32 : 335,801.28 = 135,914.64 : x
  2. Step 2: Convert to fraction form
    243,358.32/335,801.28 = 135,914.64/x
  3. Step 3: Cross multiply
    243,358.32x = 335,801.28 × 135,914.64
  4. Step 4: Simplify right side
    243,358.32x = 45,640,310,082.74
  5. Step 5: Solve for x
    x = 45,640,310,082.74/243,358.32
  6. Step 6: Final answer
    x = 187,543.66

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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.