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Finding the Fourth Proportional to 218,618.13, 301,714.53 and 127,968.60

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Solution

The fourth proportional to 218,618.13, 301,714.53 and 127,968.60 is: 176,609.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,618.13 : 301,714.53 = 127,968.60 : x
  2. Step 2: Convert to fraction form
    218,618.13/301,714.53 = 127,968.60/x
  3. Step 3: Cross multiply
    218,618.13x = 301,714.53 × 127,968.60
  4. Step 4: Simplify right side
    218,618.13x = 38,609,986,003.76
  5. Step 5: Solve for x
    x = 38,609,986,003.76/218,618.13
  6. Step 6: Final answer
    x = 176,609.26

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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.