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Finding the Fourth Proportional to 268,214.90, 402,581.55 and 163,238.90

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Solution

The fourth proportional to 268,214.90, 402,581.55 and 163,238.90 is: 245,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,214.90 : 402,581.55 = 163,238.90 : x
  2. Step 2: Convert to fraction form
    268,214.90/402,581.55 = 163,238.90/x
  3. Step 3: Cross multiply
    268,214.90x = 402,581.55 × 163,238.90
  4. Step 4: Simplify right side
    268,214.90x = 65,716,969,382.30
  5. Step 5: Solve for x
    x = 65,716,969,382.30/268,214.90
  6. Step 6: Final answer
    x = 245,016.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.