Home / 281,521.02-388,499.07-154,201.17

Finding the Fourth Proportional to 281,521.02, 388,499.07 and 154,201.17

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Solution

The fourth proportional to 281,521.02, 388,499.07 and 154,201.17 is: 212,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,521.02 : 388,499.07 = 154,201.17 : x
  2. Step 2: Convert to fraction form
    281,521.02/388,499.07 = 154,201.17/x
  3. Step 3: Cross multiply
    281,521.02x = 388,499.07 × 154,201.17
  4. Step 4: Simplify right side
    281,521.02x = 59,907,011,137.91
  5. Step 5: Solve for x
    x = 59,907,011,137.91/281,521.02
  6. Step 6: Final answer
    x = 212,797.65

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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.