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Finding the Fourth Proportional to 386,374, 533,198.04 and 225,340.72

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Solution

The fourth proportional to 386,374, 533,198.04 and 225,340.72 is: 310,971.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,374 : 533,198.04 = 225,340.72 : x
  2. Step 2: Convert to fraction form
    386,374/533,198.04 = 225,340.72/x
  3. Step 3: Cross multiply
    386,374x = 533,198.04 × 225,340.72
  4. Step 4: Simplify right side
    386,374x = 120,151,230,236.19
  5. Step 5: Solve for x
    x = 120,151,230,236.19/386,374
  6. Step 6: Final answer
    x = 310,971.31

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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.