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Finding the Fourth Proportional to 540,649.38, 810,974.13 and 203,765.63

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Solution

The fourth proportional to 540,649.38, 810,974.13 and 203,765.63 is: 305,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,649.38 : 810,974.13 = 203,765.63 : x
  2. Step 2: Convert to fraction form
    540,649.38/810,974.13 = 203,765.63/x
  3. Step 3: Cross multiply
    540,649.38x = 810,974.13 × 203,765.63
  4. Step 4: Simplify right side
    540,649.38x = 165,248,649,694.16
  5. Step 5: Solve for x
    x = 165,248,649,694.16/540,649.38
  6. Step 6: Final answer
    x = 305,648.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.