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Finding the Fourth Proportional to 275,790.30, 413,734.05 and 98,400.30

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Solution

The fourth proportional to 275,790.30, 413,734.05 and 98,400.30 is: 147,617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,790.30 : 413,734.05 = 98,400.30 : x
  2. Step 2: Convert to fraction form
    275,790.30/413,734.05 = 98,400.30/x
  3. Step 3: Cross multiply
    275,790.30x = 413,734.05 × 98,400.30
  4. Step 4: Simplify right side
    275,790.30x = 40,711,554,640.22
  5. Step 5: Solve for x
    x = 40,711,554,640.22/275,790.30
  6. Step 6: Final answer
    x = 147,617.79

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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.