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Finding the Fourth Proportional to 243,101.63, 335,514.05 and 135,678.57

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Solution

The fourth proportional to 243,101.63, 335,514.05 and 135,678.57 is: 187,255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,101.63 : 335,514.05 = 135,678.57 : x
  2. Step 2: Convert to fraction form
    243,101.63/335,514.05 = 135,678.57/x
  3. Step 3: Cross multiply
    243,101.63x = 335,514.05 × 135,678.57
  4. Step 4: Simplify right side
    243,101.63x = 45,522,065,840.52
  5. Step 5: Solve for x
    x = 45,522,065,840.52/243,101.63
  6. Step 6: Final answer
    x = 187,255.29

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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.