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Finding the Fourth Proportional to 243,311.93, 335,746.47 and 135,879.65

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Solution

The fourth proportional to 243,311.93, 335,746.47 and 135,879.65 is: 187,500.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,311.93 : 335,746.47 = 135,879.65 : x
  2. Step 2: Convert to fraction form
    243,311.93/335,746.47 = 135,879.65/x
  3. Step 3: Cross multiply
    243,311.93x = 335,746.47 × 135,879.65
  4. Step 4: Simplify right side
    243,311.93x = 45,621,112,832.34
  5. Step 5: Solve for x
    x = 45,621,112,832.34/243,311.93
  6. Step 6: Final answer
    x = 187,500.52

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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.