Home / 281,248.76-388,173.73-158,778.38

Finding the Fourth Proportional to 281,248.76, 388,173.73 and 158,778.38

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Solution

The fourth proportional to 281,248.76, 388,173.73 and 158,778.38 is: 219,142.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,248.76 : 388,173.73 = 158,778.38 : x
  2. Step 2: Convert to fraction form
    281,248.76/388,173.73 = 158,778.38/x
  3. Step 3: Cross multiply
    281,248.76x = 388,173.73 × 158,778.38
  4. Step 4: Simplify right side
    281,248.76x = 61,633,596,581.45
  5. Step 5: Solve for x
    x = 61,633,596,581.45/281,248.76
  6. Step 6: Final answer
    x = 219,142.64

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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.