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Finding the Fourth Proportional to 218,987.88, 302,203.34 and 118,385.88

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Solution

The fourth proportional to 218,987.88, 302,203.34 and 118,385.88 is: 163,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,987.88 : 302,203.34 = 118,385.88 : x
  2. Step 2: Convert to fraction form
    218,987.88/302,203.34 = 118,385.88/x
  3. Step 3: Cross multiply
    218,987.88x = 302,203.34 × 118,385.88
  4. Step 4: Simplify right side
    218,987.88x = 35,776,608,344.84
  5. Step 5: Solve for x
    x = 35,776,608,344.84/218,987.88
  6. Step 6: Final answer
    x = 163,372.55

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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.