Home / 281,645.10-388,670.40-154,320.66

Finding the Fourth Proportional to 281,645.10, 388,670.40 and 154,320.66

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Solution

The fourth proportional to 281,645.10, 388,670.40 and 154,320.66 is: 212,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,645.10 : 388,670.40 = 154,320.66 : x
  2. Step 2: Convert to fraction form
    281,645.10/388,670.40 = 154,320.66/x
  3. Step 3: Cross multiply
    281,645.10x = 388,670.40 × 154,320.66
  4. Step 4: Simplify right side
    281,645.10x = 59,979,872,650.46
  5. Step 5: Solve for x
    x = 59,979,872,650.46/281,645.10
  6. Step 6: Final answer
    x = 212,962.60

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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.