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Finding the Fourth Proportional to 218,137.56, 300,928.80 and 127,497.36

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Solution

The fourth proportional to 218,137.56, 300,928.80 and 127,497.36 is: 175,887.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,137.56 : 300,928.80 = 127,497.36 : x
  2. Step 2: Convert to fraction form
    218,137.56/300,928.80 = 127,497.36/x
  3. Step 3: Cross multiply
    218,137.56x = 300,928.80 × 127,497.36
  4. Step 4: Simplify right side
    218,137.56x = 38,367,627,547.97
  5. Step 5: Solve for x
    x = 38,367,627,547.97/218,137.56
  6. Step 6: Final answer
    x = 175,887.31

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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.