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Finding the Fourth Proportional to 243,001.70, 335,341.84 and 135,565.32

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Solution

The fourth proportional to 243,001.70, 335,341.84 and 135,565.32 is: 187,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,001.70 : 335,341.84 = 135,565.32 : x
  2. Step 2: Convert to fraction form
    243,001.70/335,341.84 = 135,565.32/x
  3. Step 3: Cross multiply
    243,001.70x = 335,341.84 × 135,565.32
  4. Step 4: Simplify right side
    243,001.70x = 45,460,723,848.99
  5. Step 5: Solve for x
    x = 45,460,723,848.99/243,001.70
  6. Step 6: Final answer
    x = 187,079.86

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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.