Home / 393,074.28-542,444.30-223,317.72

Finding the Fourth Proportional to 393,074.28, 542,444.30 and 223,317.72

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Solution

The fourth proportional to 393,074.28, 542,444.30 and 223,317.72 is: 308,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,074.28 : 542,444.30 = 223,317.72 : x
  2. Step 2: Convert to fraction form
    393,074.28/542,444.30 = 223,317.72/x
  3. Step 3: Cross multiply
    393,074.28x = 542,444.30 × 223,317.72
  4. Step 4: Simplify right side
    393,074.28x = 121,137,424,303.00
  5. Step 5: Solve for x
    x = 121,137,424,303.00/393,074.28
  6. Step 6: Final answer
    x = 308,179.47

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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.