Home / 281,104.92-387,933.95-153,780.51

Finding the Fourth Proportional to 281,104.92, 387,933.95 and 153,780.51

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Solution

The fourth proportional to 281,104.92, 387,933.95 and 153,780.51 is: 212,222.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,104.92 : 387,933.95 = 153,780.51 : x
  2. Step 2: Convert to fraction form
    281,104.92/387,933.95 = 153,780.51/x
  3. Step 3: Cross multiply
    281,104.92x = 387,933.95 × 153,780.51
  4. Step 4: Simplify right side
    281,104.92x = 59,656,680,677.31
  5. Step 5: Solve for x
    x = 59,656,680,677.31/281,104.92
  6. Step 6: Final answer
    x = 212,222.12

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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.