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Finding the Fourth Proportional to 281,750.42, 388,865.51 and 213,652.58

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Solution

The fourth proportional to 281,750.42, 388,865.51 and 213,652.58 is: 294,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,750.42 : 388,865.51 = 213,652.58 : x
  2. Step 2: Convert to fraction form
    281,750.42/388,865.51 = 213,652.58/x
  3. Step 3: Cross multiply
    281,750.42x = 388,865.51 × 213,652.58
  4. Step 4: Simplify right side
    281,750.42x = 83,082,116,471.93
  5. Step 5: Solve for x
    x = 83,082,116,471.93/281,750.42
  6. Step 6: Final answer
    x = 294,878.42

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1.5x scale

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.