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Finding the Fourth Proportional to 243,025.50, 335,388.15 and 142,455.90

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Solution

The fourth proportional to 243,025.50, 335,388.15 and 142,455.90 is: 196,596.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,025.50 : 335,388.15 = 142,455.90 : x
  2. Step 2: Convert to fraction form
    243,025.50/335,388.15 = 142,455.90/x
  3. Step 3: Cross multiply
    243,025.50x = 335,388.15 × 142,455.90
  4. Step 4: Simplify right side
    243,025.50x = 47,778,020,757.59
  5. Step 5: Solve for x
    x = 47,778,020,757.59/243,025.50
  6. Step 6: Final answer
    x = 196,596.74

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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.