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Finding the Fourth Proportional to 218,960.52, 302,174.48 and 138,358.63

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Solution

The fourth proportional to 218,960.52, 302,174.48 and 138,358.63 is: 190,940.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,960.52 : 302,174.48 = 138,358.63 : x
  2. Step 2: Convert to fraction form
    218,960.52/302,174.48 = 138,358.63/x
  3. Step 3: Cross multiply
    218,960.52x = 302,174.48 × 138,358.63
  4. Step 4: Simplify right side
    218,960.52x = 41,808,446,381.97
  5. Step 5: Solve for x
    x = 41,808,446,381.97/218,960.52
  6. Step 6: Final answer
    x = 190,940.57

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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.