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Finding the Fourth Proportional to 486,321.13, 729,516.67 and 186,801.71

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Solution

The fourth proportional to 486,321.13, 729,516.67 and 186,801.71 is: 280,216.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,321.13 : 729,516.67 = 186,801.71 : x
  2. Step 2: Convert to fraction form
    486,321.13/729,516.67 = 186,801.71/x
  3. Step 3: Cross multiply
    486,321.13x = 729,516.67 × 186,801.71
  4. Step 4: Simplify right side
    486,321.13x = 136,274,962,786.29
  5. Step 5: Solve for x
    x = 136,274,962,786.29/486,321.13
  6. Step 6: Final answer
    x = 280,216.00

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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.