Home / 275,109.03-379,666.04-154,288.89

Finding the Fourth Proportional to 275,109.03, 379,666.04 and 154,288.89

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Solution

The fourth proportional to 275,109.03, 379,666.04 and 154,288.89 is: 212,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,109.03 : 379,666.04 = 154,288.89 : x
  2. Step 2: Convert to fraction form
    275,109.03/379,666.04 = 154,288.89/x
  3. Step 3: Cross multiply
    275,109.03x = 379,666.04 × 154,288.89
  4. Step 4: Simplify right side
    275,109.03x = 58,578,251,110.85
  5. Step 5: Solve for x
    x = 58,578,251,110.85/275,109.03
  6. Step 6: Final answer
    x = 212,927.40

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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.