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Finding the Fourth Proportional to 330,396.65, 455,956.72 and 187,156.65

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Solution

The fourth proportional to 330,396.65, 455,956.72 and 187,156.65 is: 258,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,396.65 : 455,956.72 = 187,156.65 : x
  2. Step 2: Convert to fraction form
    330,396.65/455,956.72 = 187,156.65/x
  3. Step 3: Cross multiply
    330,396.65x = 455,956.72 × 187,156.65
  4. Step 4: Simplify right side
    330,396.65x = 85,335,332,260.19
  5. Step 5: Solve for x
    x = 85,335,332,260.19/330,396.65
  6. Step 6: Final answer
    x = 258,281.47

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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.