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Finding the Fourth Proportional to 218,960.80, 302,165.76 and 118,358.80

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Solution

The fourth proportional to 218,960.80, 302,165.76 and 118,358.80 is: 163,335.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,960.80 : 302,165.76 = 118,358.80 : x
  2. Step 2: Convert to fraction form
    218,960.80/302,165.76 = 118,358.80/x
  3. Step 3: Cross multiply
    218,960.80x = 302,165.76 × 118,358.80
  4. Step 4: Simplify right side
    218,960.80x = 35,763,976,754.69
  5. Step 5: Solve for x
    x = 35,763,976,754.69/218,960.80
  6. Step 6: Final answer
    x = 163,335.07

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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.