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Finding the Fourth Proportional to 243,146.06, 335,719.30 and 157,155.92

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Solution

The fourth proportional to 243,146.06, 335,719.30 and 157,155.92 is: 216,990.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,146.06 : 335,719.30 = 157,155.92 : x
  2. Step 2: Convert to fraction form
    243,146.06/335,719.30 = 157,155.92/x
  3. Step 3: Cross multiply
    243,146.06x = 335,719.30 × 157,155.92
  4. Step 4: Simplify right side
    243,146.06x = 52,760,275,453.26
  5. Step 5: Solve for x
    x = 52,760,275,453.26/243,146.06
  6. Step 6: Final answer
    x = 216,990.05

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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.