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Finding the Fourth Proportional to 275,864.54, 380,728.45 and 155,006.06

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Solution

The fourth proportional to 275,864.54, 380,728.45 and 155,006.06 is: 213,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,864.54 : 380,728.45 = 155,006.06 : x
  2. Step 2: Convert to fraction form
    275,864.54/380,728.45 = 155,006.06/x
  3. Step 3: Cross multiply
    275,864.54x = 380,728.45 × 155,006.06
  4. Step 4: Simplify right side
    275,864.54x = 59,015,215,254.52
  5. Step 5: Solve for x
    x = 59,015,215,254.52/275,864.54
  6. Step 6: Final answer
    x = 213,928.24

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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.