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Finding the Fourth Proportional to 386,395.60, 579,812.64 and 149,754.64

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Solution

The fourth proportional to 386,395.60, 579,812.64 and 149,754.64 is: 224,716.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,395.60 : 579,812.64 = 149,754.64 : x
  2. Step 2: Convert to fraction form
    386,395.60/579,812.64 = 149,754.64/x
  3. Step 3: Cross multiply
    386,395.60x = 579,812.64 × 149,754.64
  4. Step 4: Simplify right side
    386,395.60x = 86,829,633,170.65
  5. Step 5: Solve for x
    x = 86,829,633,170.65/386,395.60
  6. Step 6: Final answer
    x = 224,716.93

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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.