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Finding the Fourth Proportional to 386,319.06, 579,429.36 and 149,499.72

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Solution

The fourth proportional to 386,319.06, 579,429.36 and 149,499.72 is: 224,230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,319.06 : 579,429.36 = 149,499.72 : x
  2. Step 2: Convert to fraction form
    386,319.06/579,429.36 = 149,499.72/x
  3. Step 3: Cross multiply
    386,319.06x = 579,429.36 × 149,499.72
  4. Step 4: Simplify right side
    386,319.06x = 86,624,527,079.78
  5. Step 5: Solve for x
    x = 86,624,527,079.78/386,319.06
  6. Step 6: Final answer
    x = 224,230.53

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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.