Home / 281,646.10-388,671.78-154,321.66

Finding the Fourth Proportional to 281,646.10, 388,671.78 and 154,321.66

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Solution

The fourth proportional to 281,646.10, 388,671.78 and 154,321.66 is: 212,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,646.10 : 388,671.78 = 154,321.66 : x
  2. Step 2: Convert to fraction form
    281,646.10/388,671.78 = 154,321.66/x
  3. Step 3: Cross multiply
    281,646.10x = 388,671.78 × 154,321.66
  4. Step 4: Simplify right side
    281,646.10x = 59,980,474,284.75
  5. Step 5: Solve for x
    x = 59,980,474,284.75/281,646.10
  6. Step 6: Final answer
    x = 212,963.98

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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.