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Finding the Fourth Proportional to 218,111.41, 300,870.80 and 127,448.11

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Solution

The fourth proportional to 218,111.41, 300,870.80 and 127,448.11 is: 175,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,111.41 : 300,870.80 = 127,448.11 : x
  2. Step 2: Convert to fraction form
    218,111.41/300,870.80 = 127,448.11/x
  3. Step 3: Cross multiply
    218,111.41x = 300,870.80 × 127,448.11
  4. Step 4: Simplify right side
    218,111.41x = 38,345,413,309.83
  5. Step 5: Solve for x
    x = 38,345,413,309.83/218,111.41
  6. Step 6: Final answer
    x = 175,806.55

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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.