Home / 281,331.65-388,228.01-160,512.05

Finding the Fourth Proportional to 281,331.65, 388,228.01 and 160,512.05

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Solution

The fourth proportional to 281,331.65, 388,228.01 and 160,512.05 is: 221,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,331.65 : 388,228.01 = 160,512.05 : x
  2. Step 2: Convert to fraction form
    281,331.65/388,228.01 = 160,512.05/x
  3. Step 3: Cross multiply
    281,331.65x = 388,228.01 × 160,512.05
  4. Step 4: Simplify right side
    281,331.65x = 62,315,273,920.53
  5. Step 5: Solve for x
    x = 62,315,273,920.53/281,331.65
  6. Step 6: Final answer
    x = 221,501.11

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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.