Home / 275,685.15-380,428.11-154,823.33

Finding the Fourth Proportional to 275,685.15, 380,428.11 and 154,823.33

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Solution

The fourth proportional to 275,685.15, 380,428.11 and 154,823.33 is: 213,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,685.15 : 380,428.11 = 154,823.33 : x
  2. Step 2: Convert to fraction form
    275,685.15/380,428.11 = 154,823.33/x
  3. Step 3: Cross multiply
    275,685.15x = 380,428.11 × 154,823.33
  4. Step 4: Simplify right side
    275,685.15x = 58,899,144,913.67
  5. Step 5: Solve for x
    x = 58,899,144,913.67/275,685.15
  6. Step 6: Final answer
    x = 213,646.42

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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.