Home / 399,031.10-551,262.68-261,536.29

Finding the Fourth Proportional to 399,031.10, 551,262.68 and 261,536.29

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Solution

The fourth proportional to 399,031.10, 551,262.68 and 261,536.29 is: 361,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,031.10 : 551,262.68 = 261,536.29 : x
  2. Step 2: Convert to fraction form
    399,031.10/551,262.68 = 261,536.29/x
  3. Step 3: Cross multiply
    399,031.10x = 551,262.68 × 261,536.29
  4. Step 4: Simplify right side
    399,031.10x = 144,175,195,418.34
  5. Step 5: Solve for x
    x = 144,175,195,418.34/399,031.10
  6. Step 6: Final answer
    x = 361,313.18

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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.