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Finding the Fourth Proportional to 281,796.90, 388,877.67 and 154,470.30

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Solution

The fourth proportional to 281,796.90, 388,877.67 and 154,470.30 is: 213,167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,796.90 : 388,877.67 = 154,470.30 : x
  2. Step 2: Convert to fraction form
    281,796.90/388,877.67 = 154,470.30/x
  3. Step 3: Cross multiply
    281,796.90x = 388,877.67 × 154,470.30
  4. Step 4: Simplify right side
    281,796.90x = 60,070,050,348.20
  5. Step 5: Solve for x
    x = 60,070,050,348.20/281,796.90
  6. Step 6: Final answer
    x = 213,167.89

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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.