Home / 399,110.80-598,665.48-162,400.72

Finding the Fourth Proportional to 399,110.80, 598,665.48 and 162,400.72

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Solution

The fourth proportional to 399,110.80, 598,665.48 and 162,400.72 is: 243,600.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,110.80 : 598,665.48 = 162,400.72 : x
  2. Step 2: Convert to fraction form
    399,110.80/598,665.48 = 162,400.72/x
  3. Step 3: Cross multiply
    399,110.80x = 598,665.48 × 162,400.72
  4. Step 4: Simplify right side
    399,110.80x = 97,223,704,991.15
  5. Step 5: Solve for x
    x = 97,223,704,991.15/399,110.80
  6. Step 6: Final answer
    x = 243,600.79

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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.