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Finding the Fourth Proportional to 399,422.58, 551,206.89 and 227,332.10

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Solution

The fourth proportional to 399,422.58, 551,206.89 and 227,332.10 is: 313,720.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,422.58 : 551,206.89 = 227,332.10 : x
  2. Step 2: Convert to fraction form
    399,422.58/551,206.89 = 227,332.10/x
  3. Step 3: Cross multiply
    399,422.58x = 551,206.89 × 227,332.10
  4. Step 4: Simplify right side
    399,422.58x = 125,307,017,082.14
  5. Step 5: Solve for x
    x = 125,307,017,082.14/399,422.58
  6. Step 6: Final answer
    x = 313,720.41

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1.5x scale

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.