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Finding the Fourth Proportional to 243,735.20, 365,818.80 and 143,770.40

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Solution

The fourth proportional to 243,735.20, 365,818.80 and 143,770.40 is: 215,783.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,735.20 : 365,818.80 = 143,770.40 : x
  2. Step 2: Convert to fraction form
    243,735.20/365,818.80 = 143,770.40/x
  3. Step 3: Cross multiply
    243,735.20x = 365,818.80 × 143,770.40
  4. Step 4: Simplify right side
    243,735.20x = 52,593,915,203.52
  5. Step 5: Solve for x
    x = 52,593,915,203.52/243,735.20
  6. Step 6: Final answer
    x = 215,783.01

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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.