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Finding the Fourth Proportional to 207,608.40, 286,512.48 and 120,411.21

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Solution

The fourth proportional to 207,608.40, 286,512.48 and 120,411.21 is: 166,174.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,608.40 : 286,512.48 = 120,411.21 : x
  2. Step 2: Convert to fraction form
    207,608.40/286,512.48 = 120,411.21/x
  3. Step 3: Cross multiply
    207,608.40x = 286,512.48 × 120,411.21
  4. Step 4: Simplify right side
    207,608.40x = 34,499,314,396.90
  5. Step 5: Solve for x
    x = 34,499,314,396.90/207,608.40
  6. Step 6: Final answer
    x = 166,174.94

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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.