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Finding the Fourth Proportional to 296,923.51, 445,337.88 and 86,512.24

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Solution

The fourth proportional to 296,923.51, 445,337.88 and 86,512.24 is: 129,754.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,923.51 : 445,337.88 = 86,512.24 : x
  2. Step 2: Convert to fraction form
    296,923.51/445,337.88 = 86,512.24/x
  3. Step 3: Cross multiply
    296,923.51x = 445,337.88 × 86,512.24
  4. Step 4: Simplify right side
    296,923.51x = 38,527,177,555.65
  5. Step 5: Solve for x
    x = 38,527,177,555.65/296,923.51
  6. Step 6: Final answer
    x = 129,754.55

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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.