Home / 281,490.34-388,442.24-154,163.20

Finding the Fourth Proportional to 281,490.34, 388,442.24 and 154,163.20

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Solution

The fourth proportional to 281,490.34, 388,442.24 and 154,163.20 is: 212,737.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,490.34 : 388,442.24 = 154,163.20 : x
  2. Step 2: Convert to fraction form
    281,490.34/388,442.24 = 154,163.20/x
  3. Step 3: Cross multiply
    281,490.34x = 388,442.24 × 154,163.20
  4. Step 4: Simplify right side
    281,490.34x = 59,883,498,733.57
  5. Step 5: Solve for x
    x = 59,883,498,733.57/281,490.34
  6. Step 6: Final answer
    x = 212,737.31

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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.