Home / 399,780.42-551,680.38-236,542.74

Finding the Fourth Proportional to 399,780.42, 551,680.38 and 236,542.74

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Solution

The fourth proportional to 399,780.42, 551,680.38 and 236,542.74 is: 326,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,780.42 : 551,680.38 = 236,542.74 : x
  2. Step 2: Convert to fraction form
    399,780.42/551,680.38 = 236,542.74/x
  3. Step 3: Cross multiply
    399,780.42x = 551,680.38 × 236,542.74
  4. Step 4: Simplify right side
    399,780.42x = 130,495,988,689.44
  5. Step 5: Solve for x
    x = 130,495,988,689.44/399,780.42
  6. Step 6: Final answer
    x = 326,419.16

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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.