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Finding the Fourth Proportional to 275,387.60, 413,081.40 and 245,320.40

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Solution

The fourth proportional to 275,387.60, 413,081.40 and 245,320.40 is: 367,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,387.60 : 413,081.40 = 245,320.40 : x
  2. Step 2: Convert to fraction form
    275,387.60/413,081.40 = 245,320.40/x
  3. Step 3: Cross multiply
    275,387.60x = 413,081.40 × 245,320.40
  4. Step 4: Simplify right side
    275,387.60x = 101,337,294,280.56
  5. Step 5: Solve for x
    x = 101,337,294,280.56/275,387.60
  6. Step 6: Final answer
    x = 367,980.60

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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.