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Finding the Fourth Proportional to 275,816.85, 380,603.93 and 154,948.65

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Solution

The fourth proportional to 275,816.85, 380,603.93 and 154,948.65 is: 213,816.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,816.85 : 380,603.93 = 154,948.65 : x
  2. Step 2: Convert to fraction form
    275,816.85/380,603.93 = 154,948.65/x
  3. Step 3: Cross multiply
    275,816.85x = 380,603.93 × 154,948.65
  4. Step 4: Simplify right side
    275,816.85x = 58,974,064,363.45
  5. Step 5: Solve for x
    x = 58,974,064,363.45/275,816.85
  6. Step 6: Final answer
    x = 213,816.03

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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.