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Finding the Fourth Proportional to 245,728.80, 368,593.20 and 87,900.30

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Solution

The fourth proportional to 245,728.80, 368,593.20 and 87,900.30 is: 131,850.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,728.80 : 368,593.20 = 87,900.30 : x
  2. Step 2: Convert to fraction form
    245,728.80/368,593.20 = 87,900.30/x
  3. Step 3: Cross multiply
    245,728.80x = 368,593.20 × 87,900.30
  4. Step 4: Simplify right side
    245,728.80x = 32,399,452,857.96
  5. Step 5: Solve for x
    x = 32,399,452,857.96/245,728.80
  6. Step 6: Final answer
    x = 131,850.45

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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.