Home / 218,001.53-300,718.98-137,290.28

Finding the Fourth Proportional to 218,001.53, 300,718.98 and 137,290.28

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Solution

The fourth proportional to 218,001.53, 300,718.98 and 137,290.28 is: 189,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,001.53 : 300,718.98 = 137,290.28 : x
  2. Step 2: Convert to fraction form
    218,001.53/300,718.98 = 137,290.28/x
  3. Step 3: Cross multiply
    218,001.53x = 300,718.98 × 137,290.28
  4. Step 4: Simplify right side
    218,001.53x = 41,285,792,965.51
  5. Step 5: Solve for x
    x = 41,285,792,965.51/218,001.53
  6. Step 6: Final answer
    x = 189,383.04

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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.