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Finding the Fourth Proportional to 274,548.50, 378,884.84 and 153,689.06

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Solution

The fourth proportional to 274,548.50, 378,884.84 and 153,689.06 is: 212,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,548.50 : 378,884.84 = 153,689.06 : x
  2. Step 2: Convert to fraction form
    274,548.50/378,884.84 = 153,689.06/x
  3. Step 3: Cross multiply
    274,548.50x = 378,884.84 × 153,689.06
  4. Step 4: Simplify right side
    274,548.50x = 58,230,454,907.85
  5. Step 5: Solve for x
    x = 58,230,454,907.85/274,548.50
  6. Step 6: Final answer
    x = 212,095.33

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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.