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Finding the Fourth Proportional to 281,487.60, 388,480.62 and 160,647.07

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Solution

The fourth proportional to 281,487.60, 388,480.62 and 160,647.07 is: 221,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,487.60 : 388,480.62 = 160,647.07 : x
  2. Step 2: Convert to fraction form
    281,487.60/388,480.62 = 160,647.07/x
  3. Step 3: Cross multiply
    281,487.60x = 388,480.62 × 160,647.07
  4. Step 4: Simplify right side
    281,487.60x = 62,408,273,354.78
  5. Step 5: Solve for x
    x = 62,408,273,354.78/281,487.60
  6. Step 6: Final answer
    x = 221,708.78

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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.