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Finding the Fourth Proportional to 243,422.20, 365,133.30 and 143,630.20

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Solution

The fourth proportional to 243,422.20, 365,133.30 and 143,630.20 is: 215,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,422.20 : 365,133.30 = 143,630.20 : x
  2. Step 2: Convert to fraction form
    243,422.20/365,133.30 = 143,630.20/x
  3. Step 3: Cross multiply
    243,422.20x = 365,133.30 × 143,630.20
  4. Step 4: Simplify right side
    243,422.20x = 52,444,168,905.66
  5. Step 5: Solve for x
    x = 52,444,168,905.66/243,422.20
  6. Step 6: Final answer
    x = 215,445.30

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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.