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Finding the Fourth Proportional to 225,163.40, 310,763.59 and 129,652.52

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Solution

The fourth proportional to 225,163.40, 310,763.59 and 129,652.52 is: 178,942.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,163.40 : 310,763.59 = 129,652.52 : x
  2. Step 2: Convert to fraction form
    225,163.40/310,763.59 = 129,652.52/x
  3. Step 3: Cross multiply
    225,163.40x = 310,763.59 × 129,652.52
  4. Step 4: Simplify right side
    225,163.40x = 40,291,280,689.80
  5. Step 5: Solve for x
    x = 40,291,280,689.80/225,163.40
  6. Step 6: Final answer
    x = 178,942.41

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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.