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Finding the Fourth Proportional to 281,610.77, 388,632.20 and 154,294.56

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Solution

The fourth proportional to 281,610.77, 388,632.20 and 154,294.56 is: 212,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,610.77 : 388,632.20 = 154,294.56 : x
  2. Step 2: Convert to fraction form
    281,610.77/388,632.20 = 154,294.56/x
  3. Step 3: Cross multiply
    281,610.77x = 388,632.20 × 154,294.56
  4. Step 4: Simplify right side
    281,610.77x = 59,963,833,529.36
  5. Step 5: Solve for x
    x = 59,963,833,529.36/281,610.77
  6. Step 6: Final answer
    x = 212,931.61

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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.