Home / 386,878.12-533,915.50-217,112.26

Finding the Fourth Proportional to 386,878.12, 533,915.50 and 217,112.26

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Solution

The fourth proportional to 386,878.12, 533,915.50 and 217,112.26 is: 299,628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,878.12 : 533,915.50 = 217,112.26 : x
  2. Step 2: Convert to fraction form
    386,878.12/533,915.50 = 217,112.26/x
  3. Step 3: Cross multiply
    386,878.12x = 533,915.50 × 217,112.26
  4. Step 4: Simplify right side
    386,878.12x = 115,919,600,854.03
  5. Step 5: Solve for x
    x = 115,919,600,854.03/386,878.12
  6. Step 6: Final answer
    x = 299,628.22

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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.