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Finding the Fourth Proportional to 276,995.66, 415,372.79 and 147,136.04

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Solution

The fourth proportional to 276,995.66, 415,372.79 and 147,136.04 is: 220,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,995.66 : 415,372.79 = 147,136.04 : x
  2. Step 2: Convert to fraction form
    276,995.66/415,372.79 = 147,136.04/x
  3. Step 3: Cross multiply
    276,995.66x = 415,372.79 × 147,136.04
  4. Step 4: Simplify right side
    276,995.66x = 61,116,304,631.81
  5. Step 5: Solve for x
    x = 61,116,304,631.81/276,995.66
  6. Step 6: Final answer
    x = 220,639.94

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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.