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Finding the Fourth Proportional to 281,813.49, 388,888.02 and 160,931.07

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Solution

The fourth proportional to 281,813.49, 388,888.02 and 160,931.07 is: 222,076.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,813.49 : 388,888.02 = 160,931.07 : x
  2. Step 2: Convert to fraction form
    281,813.49/388,888.02 = 160,931.07/x
  3. Step 3: Cross multiply
    281,813.49x = 388,888.02 × 160,931.07
  4. Step 4: Simplify right side
    281,813.49x = 62,584,165,168.78
  5. Step 5: Solve for x
    x = 62,584,165,168.78/281,813.49
  6. Step 6: Final answer
    x = 222,076.54

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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.