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Finding the Fourth Proportional to 207,597.31, 286,505.45 and 127,078.05

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Solution

The fourth proportional to 207,597.31, 286,505.45 and 127,078.05 is: 175,380.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,597.31 : 286,505.45 = 127,078.05 : x
  2. Step 2: Convert to fraction form
    207,597.31/286,505.45 = 127,078.05/x
  3. Step 3: Cross multiply
    207,597.31x = 286,505.45 × 127,078.05
  4. Step 4: Simplify right side
    207,597.31x = 36,408,553,900.37
  5. Step 5: Solve for x
    x = 36,408,553,900.37/207,597.31
  6. Step 6: Final answer
    x = 175,380.66

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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.