Home / 391,619.98-540,394.96-230,465.42

Finding the Fourth Proportional to 391,619.98, 540,394.96 and 230,465.42

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Solution

The fourth proportional to 391,619.98, 540,394.96 and 230,465.42 is: 318,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,619.98 : 540,394.96 = 230,465.42 : x
  2. Step 2: Convert to fraction form
    391,619.98/540,394.96 = 230,465.42/x
  3. Step 3: Cross multiply
    391,619.98x = 540,394.96 × 230,465.42
  4. Step 4: Simplify right side
    391,619.98x = 124,542,351,422.28
  5. Step 5: Solve for x
    x = 124,542,351,422.28/391,619.98
  6. Step 6: Final answer
    x = 318,018.38

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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.