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Finding the Fourth Proportional to 218,008.16, 300,933.48 and 127,393.60

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Solution

The fourth proportional to 218,008.16, 300,933.48 and 127,393.60 is: 175,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,008.16 : 300,933.48 = 127,393.60 : x
  2. Step 2: Convert to fraction form
    218,008.16/300,933.48 = 127,393.60/x
  3. Step 3: Cross multiply
    218,008.16x = 300,933.48 × 127,393.60
  4. Step 4: Simplify right side
    218,008.16x = 38,336,999,377.73
  5. Step 5: Solve for x
    x = 38,336,999,377.73/218,008.16
  6. Step 6: Final answer
    x = 175,851.21

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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.