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Finding the Fourth Proportional to 218,859.20, 302,025.60 and 118,257.20

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Solution

The fourth proportional to 218,859.20, 302,025.60 and 118,257.20 is: 163,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,859.20 : 302,025.60 = 118,257.20 : x
  2. Step 2: Convert to fraction form
    218,859.20/302,025.60 = 118,257.20/x
  3. Step 3: Cross multiply
    218,859.20x = 302,025.60 × 118,257.20
  4. Step 4: Simplify right side
    218,859.20x = 35,716,700,274.19
  5. Step 5: Solve for x
    x = 35,716,700,274.19/218,859.20
  6. Step 6: Final answer
    x = 163,194.88

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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.