Home / 281,438.10-388,383.93-154,112.58

Finding the Fourth Proportional to 281,438.10, 388,383.93 and 154,112.58

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Solution

The fourth proportional to 281,438.10, 388,383.93 and 154,112.58 is: 212,675.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,438.10 : 388,383.93 = 154,112.58 : x
  2. Step 2: Convert to fraction form
    281,438.10/388,383.93 = 154,112.58/x
  3. Step 3: Cross multiply
    281,438.10x = 388,383.93 × 154,112.58
  4. Step 4: Simplify right side
    281,438.10x = 59,854,849,482.84
  5. Step 5: Solve for x
    x = 59,854,849,482.84/281,438.10
  6. Step 6: Final answer
    x = 212,675.01

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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.