Home / 386,963.31-533,991.40-214,892.20

Finding the Fourth Proportional to 386,963.31, 533,991.40 and 214,892.20

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Solution

The fourth proportional to 386,963.31, 533,991.40 and 214,892.20 is: 296,541.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,963.31 : 533,991.40 = 214,892.20 : x
  2. Step 2: Convert to fraction form
    386,963.31/533,991.40 = 214,892.20/x
  3. Step 3: Cross multiply
    386,963.31x = 533,991.40 × 214,892.20
  4. Step 4: Simplify right side
    386,963.31x = 114,750,586,727.08
  5. Step 5: Solve for x
    x = 114,750,586,727.08/386,963.31
  6. Step 6: Final answer
    x = 296,541.26

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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.