Home / 281,868.64-388,975.76-154,543.92

Finding the Fourth Proportional to 281,868.64, 388,975.76 and 154,543.92

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Solution

The fourth proportional to 281,868.64, 388,975.76 and 154,543.92 is: 213,268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,868.64 : 388,975.76 = 154,543.92 : x
  2. Step 2: Convert to fraction form
    281,868.64/388,975.76 = 154,543.92/x
  3. Step 3: Cross multiply
    281,868.64x = 388,975.76 × 154,543.92
  4. Step 4: Simplify right side
    281,868.64x = 60,113,838,735.38
  5. Step 5: Solve for x
    x = 60,113,838,735.38/281,868.64
  6. Step 6: Final answer
    x = 213,268.98

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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.