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Finding the Fourth Proportional to 275,254.40, 413,140.80 and 170,278.40

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Solution

The fourth proportional to 275,254.40, 413,140.80 and 170,278.40 is: 255,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,254.40 : 413,140.80 = 170,278.40 : x
  2. Step 2: Convert to fraction form
    275,254.40/413,140.80 = 170,278.40/x
  3. Step 3: Cross multiply
    275,254.40x = 413,140.80 × 170,278.40
  4. Step 4: Simplify right side
    275,254.40x = 70,348,954,398.72
  5. Step 5: Solve for x
    x = 70,348,954,398.72/275,254.40
  6. Step 6: Final answer
    x = 255,577.95

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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.