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Finding the Fourth Proportional to 276,994.15, 415,370.54 and 147,134.53

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Solution

The fourth proportional to 276,994.15, 415,370.54 and 147,134.53 is: 220,637.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,994.15 : 415,370.54 = 147,134.53 : x
  2. Step 2: Convert to fraction form
    276,994.15/415,370.54 = 147,134.53/x
  3. Step 3: Cross multiply
    276,994.15x = 415,370.54 × 147,134.53
  4. Step 4: Simplify right side
    276,994.15x = 61,115,348,508.16
  5. Step 5: Solve for x
    x = 61,115,348,508.16/276,994.15
  6. Step 6: Final answer
    x = 220,637.69

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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.