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Finding the Fourth Proportional to 399,774.42, 551,672.10 and 236,536.74

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Solution

The fourth proportional to 399,774.42, 551,672.10 and 236,536.74 is: 326,410.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,774.42 : 551,672.10 = 236,536.74 : x
  2. Step 2: Convert to fraction form
    399,774.42/551,672.10 = 236,536.74/x
  3. Step 3: Cross multiply
    399,774.42x = 551,672.10 × 236,536.74
  4. Step 4: Simplify right side
    399,774.42x = 130,490,720,082.95
  5. Step 5: Solve for x
    x = 130,490,720,082.95/399,774.42
  6. Step 6: Final answer
    x = 326,410.88

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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.