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Finding the Fourth Proportional to 207,609.28, 286,501.44 and 120,411.28

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Solution

The fourth proportional to 207,609.28, 286,501.44 and 120,411.28 is: 166,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,609.28 : 286,501.44 = 120,411.28 : x
  2. Step 2: Convert to fraction form
    207,609.28/286,501.44 = 120,411.28/x
  3. Step 3: Cross multiply
    207,609.28x = 286,501.44 × 120,411.28
  4. Step 4: Simplify right side
    207,609.28x = 34,498,005,112.24
  5. Step 5: Solve for x
    x = 34,498,005,112.24/207,609.28
  6. Step 6: Final answer
    x = 166,167.93

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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.