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Finding the Fourth Proportional to 218,999, 302,219.03 and 118,397

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Solution

The fourth proportional to 218,999, 302,219.03 and 118,397 is: 163,388.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,999 : 302,219.03 = 118,397 : x
  2. Step 2: Convert to fraction form
    218,999/302,219.03 = 118,397/x
  3. Step 3: Cross multiply
    218,999x = 302,219.03 × 118,397
  4. Step 4: Simplify right side
    218,999x = 35,781,826,494.91
  5. Step 5: Solve for x
    x = 35,781,826,494.91/218,999
  6. Step 6: Final answer
    x = 163,388.08

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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.