Home / 281,290.05-388,190.14-153,965.75

Finding the Fourth Proportional to 281,290.05, 388,190.14 and 153,965.75

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Solution

The fourth proportional to 281,290.05, 388,190.14 and 153,965.75 is: 212,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,290.05 : 388,190.14 = 153,965.75 : x
  2. Step 2: Convert to fraction form
    281,290.05/388,190.14 = 153,965.75/x
  3. Step 3: Cross multiply
    281,290.05x = 388,190.14 × 153,965.75
  4. Step 4: Simplify right side
    281,290.05x = 59,767,983,721.84
  5. Step 5: Solve for x
    x = 59,767,983,721.84/281,290.05
  6. Step 6: Final answer
    x = 212,478.13

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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.