Home / 281,743.08-388,810.64-154,417.76

Finding the Fourth Proportional to 281,743.08, 388,810.64 and 154,417.76

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Solution

The fourth proportional to 281,743.08, 388,810.64 and 154,417.76 is: 213,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,743.08 : 388,810.64 = 154,417.76 : x
  2. Step 2: Convert to fraction form
    281,743.08/388,810.64 = 154,417.76/x
  3. Step 3: Cross multiply
    281,743.08x = 388,810.64 × 154,417.76
  4. Step 4: Simplify right side
    281,743.08x = 60,039,268,092.97
  5. Step 5: Solve for x
    x = 60,039,268,092.97/281,743.08
  6. Step 6: Final answer
    x = 213,099.35

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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.