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Finding the Fourth Proportional to 207,818.42, 286,789.47 and 112,324.82

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Solution

The fourth proportional to 207,818.42, 286,789.47 and 112,324.82 is: 155,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,818.42 : 286,789.47 = 112,324.82 : x
  2. Step 2: Convert to fraction form
    207,818.42/286,789.47 = 112,324.82/x
  3. Step 3: Cross multiply
    207,818.42x = 286,789.47 × 112,324.82
  4. Step 4: Simplify right side
    207,818.42x = 32,213,575,891.40
  5. Step 5: Solve for x
    x = 32,213,575,891.40/207,818.42
  6. Step 6: Final answer
    x = 155,008.28

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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.