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Finding the Fourth Proportional to 325,211.60, 487,963.20 and 147,627.20

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Solution

The fourth proportional to 325,211.60, 487,963.20 and 147,627.20 is: 221,506.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,211.60 : 487,963.20 = 147,627.20 : x
  2. Step 2: Convert to fraction form
    325,211.60/487,963.20 = 147,627.20/x
  3. Step 3: Cross multiply
    325,211.60x = 487,963.20 × 147,627.20
  4. Step 4: Simplify right side
    325,211.60x = 72,036,640,919.04
  5. Step 5: Solve for x
    x = 72,036,640,919.04/325,211.60
  6. Step 6: Final answer
    x = 221,506.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.