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Finding the Fourth Proportional to 243,630.40, 365,445.60 and 221,857.60

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Solution

The fourth proportional to 243,630.40, 365,445.60 and 221,857.60 is: 332,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,630.40 : 365,445.60 = 221,857.60 : x
  2. Step 2: Convert to fraction form
    243,630.40/365,445.60 = 221,857.60/x
  3. Step 3: Cross multiply
    243,630.40x = 365,445.60 × 221,857.60
  4. Step 4: Simplify right side
    243,630.40x = 81,076,883,746.56
  5. Step 5: Solve for x
    x = 81,076,883,746.56/243,630.40
  6. Step 6: Final answer
    x = 332,786.40

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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.