Home / 438,554.53-605,215.19-257,397.12

Finding the Fourth Proportional to 438,554.53, 605,215.19 and 257,397.12

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Solution

The fourth proportional to 438,554.53, 605,215.19 and 257,397.12 is: 355,213.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,554.53 : 605,215.19 = 257,397.12 : x
  2. Step 2: Convert to fraction form
    438,554.53/605,215.19 = 257,397.12/x
  3. Step 3: Cross multiply
    438,554.53x = 605,215.19 × 257,397.12
  4. Step 4: Simplify right side
    438,554.53x = 155,780,645,827.58
  5. Step 5: Solve for x
    x = 155,780,645,827.58/438,554.53
  6. Step 6: Final answer
    x = 355,213.86

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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.