Home / 438,728.32-605,449.09-257,443.27

Finding the Fourth Proportional to 438,728.32, 605,449.09 and 257,443.27

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Solution

The fourth proportional to 438,728.32, 605,449.09 and 257,443.27 is: 355,274.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,728.32 : 605,449.09 = 257,443.27 : x
  2. Step 2: Convert to fraction form
    438,728.32/605,449.09 = 257,443.27/x
  3. Step 3: Cross multiply
    438,728.32x = 605,449.09 × 257,443.27
  4. Step 4: Simplify right side
    438,728.32x = 155,868,793,548.12
  5. Step 5: Solve for x
    x = 155,868,793,548.12/438,728.32
  6. Step 6: Final answer
    x = 355,274.06

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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.