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Finding the Fourth Proportional to 293,628.60, 440,442.90 and 72,012.60

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Solution

The fourth proportional to 293,628.60, 440,442.90 and 72,012.60 is: 108,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,628.60 : 440,442.90 = 72,012.60 : x
  2. Step 2: Convert to fraction form
    293,628.60/440,442.90 = 72,012.60/x
  3. Step 3: Cross multiply
    293,628.60x = 440,442.90 × 72,012.60
  4. Step 4: Simplify right side
    293,628.60x = 31,717,438,380.54
  5. Step 5: Solve for x
    x = 31,717,438,380.54/293,628.60
  6. Step 6: Final answer
    x = 108,018.90

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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.