Home / 399,313.31-551,145.62-263,371.55

Finding the Fourth Proportional to 399,313.31, 551,145.62 and 263,371.55

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Solution

The fourth proportional to 399,313.31, 551,145.62 and 263,371.55 is: 363,514.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,313.31 : 551,145.62 = 263,371.55 : x
  2. Step 2: Convert to fraction form
    399,313.31/551,145.62 = 263,371.55/x
  3. Step 3: Cross multiply
    399,313.31x = 551,145.62 × 263,371.55
  4. Step 4: Simplify right side
    399,313.31x = 145,156,074,117.81
  5. Step 5: Solve for x
    x = 145,156,074,117.81/399,313.31
  6. Step 6: Final answer
    x = 363,514.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.