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Finding the Fourth Proportional to 281,164.48, 388,012.56 and 153,842.80

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Solution

The fourth proportional to 281,164.48, 388,012.56 and 153,842.80 is: 212,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,164.48 : 388,012.56 = 153,842.80 : x
  2. Step 2: Convert to fraction form
    281,164.48/388,012.56 = 153,842.80/x
  3. Step 3: Cross multiply
    281,164.48x = 388,012.56 × 153,842.80
  4. Step 4: Simplify right side
    281,164.48x = 59,692,938,665.57
  5. Step 5: Solve for x
    x = 59,692,938,665.57/281,164.48
  6. Step 6: Final answer
    x = 212,306.12

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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.