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Finding the Fourth Proportional to 343,334.40, 515,422.80 and 216,974.40

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Solution

The fourth proportional to 343,334.40, 515,422.80 and 216,974.40 is: 325,727.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,334.40 : 515,422.80 = 216,974.40 : x
  2. Step 2: Convert to fraction form
    343,334.40/515,422.80 = 216,974.40/x
  3. Step 3: Cross multiply
    343,334.40x = 515,422.80 × 216,974.40
  4. Step 4: Simplify right side
    343,334.40x = 111,833,552,776.32
  5. Step 5: Solve for x
    x = 111,833,552,776.32/343,334.40
  6. Step 6: Final answer
    x = 325,727.78

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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.