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Finding the Fourth Proportional to 275,854.32, 380,679.30 and 154,995.66

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Solution

The fourth proportional to 275,854.32, 380,679.30 and 154,995.66 is: 213,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,854.32 : 380,679.30 = 154,995.66 : x
  2. Step 2: Convert to fraction form
    275,854.32/380,679.30 = 154,995.66/x
  3. Step 3: Cross multiply
    275,854.32x = 380,679.30 × 154,995.66
  4. Step 4: Simplify right side
    275,854.32x = 59,003,639,351.84
  5. Step 5: Solve for x
    x = 59,003,639,351.84/275,854.32
  6. Step 6: Final answer
    x = 213,894.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.