Home / 393,331.20-542,764.80-223,526.40

Finding the Fourth Proportional to 393,331.20, 542,764.80 and 223,526.40

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Solution

The fourth proportional to 393,331.20, 542,764.80 and 223,526.40 is: 308,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,331.20 : 542,764.80 = 223,526.40 : x
  2. Step 2: Convert to fraction form
    393,331.20/542,764.80 = 223,526.40/x
  3. Step 3: Cross multiply
    393,331.20x = 542,764.80 × 223,526.40
  4. Step 4: Simplify right side
    393,331.20x = 121,322,261,790.72
  5. Step 5: Solve for x
    x = 121,322,261,790.72/393,331.20
  6. Step 6: Final answer
    x = 308,448.10

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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.