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Finding the Fourth Proportional to 243,848, 365,439.90 and 137,282.78

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Solution

The fourth proportional to 243,848, 365,439.90 and 137,282.78 is: 205,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,848 : 365,439.90 = 137,282.78 : x
  2. Step 2: Convert to fraction form
    243,848/365,439.90 = 137,282.78/x
  3. Step 3: Cross multiply
    243,848x = 365,439.90 × 137,282.78
  4. Step 4: Simplify right side
    243,848x = 50,168,605,394.92
  5. Step 5: Solve for x
    x = 50,168,605,394.92/243,848
  6. Step 6: Final answer
    x = 205,737.20

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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.