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Finding the Fourth Proportional to 243,029.05, 335,245.31 and 142,407.61

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Solution

The fourth proportional to 243,029.05, 335,245.31 and 142,407.61 is: 196,443.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,029.05 : 335,245.31 = 142,407.61 : x
  2. Step 2: Convert to fraction form
    243,029.05/335,245.31 = 142,407.61/x
  3. Step 3: Cross multiply
    243,029.05x = 335,245.31 × 142,407.61
  4. Step 4: Simplify right side
    243,029.05x = 47,741,482,648.77
  5. Step 5: Solve for x
    x = 47,741,482,648.77/243,029.05
  6. Step 6: Final answer
    x = 196,443.52

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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.