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Finding the Fourth Proportional to 243,103.15, 335,499.18 and 135,694.18

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Solution

The fourth proportional to 243,103.15, 335,499.18 and 135,694.18 is: 187,267.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,103.15 : 335,499.18 = 135,694.18 : x
  2. Step 2: Convert to fraction form
    243,103.15/335,499.18 = 135,694.18/x
  3. Step 3: Cross multiply
    243,103.15x = 335,499.18 × 135,694.18
  4. Step 4: Simplify right side
    243,103.15x = 45,525,284,443.28
  5. Step 5: Solve for x
    x = 45,525,284,443.28/243,103.15
  6. Step 6: Final answer
    x = 187,267.36

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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.