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Finding the Fourth Proportional to 243,581.34, 365,373.93 and 85,773.66

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Solution

The fourth proportional to 243,581.34, 365,373.93 and 85,773.66 is: 128,661.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,581.34 : 365,373.93 = 85,773.66 : x
  2. Step 2: Convert to fraction form
    243,581.34/365,373.93 = 85,773.66/x
  3. Step 3: Cross multiply
    243,581.34x = 365,373.93 × 85,773.66
  4. Step 4: Simplify right side
    243,581.34x = 31,339,459,244.68
  5. Step 5: Solve for x
    x = 31,339,459,244.68/243,581.34
  6. Step 6: Final answer
    x = 128,661.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.