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Finding the Fourth Proportional to 243,000.56, 335,339.91 and 135,570.53

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Solution

The fourth proportional to 243,000.56, 335,339.91 and 135,570.53 is: 187,086.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,000.56 : 335,339.91 = 135,570.53 : x
  2. Step 2: Convert to fraction form
    243,000.56/335,339.91 = 135,570.53/x
  3. Step 3: Cross multiply
    243,000.56x = 335,339.91 × 135,570.53
  4. Step 4: Simplify right side
    243,000.56x = 45,462,207,652.15
  5. Step 5: Solve for x
    x = 45,462,207,652.15/243,000.56
  6. Step 6: Final answer
    x = 187,086.85

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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.