Home / 318,234,383.15-439,139,707.99-178,978,240.72

Finding the Fourth Proportional to 318,234,383.15, 439,139,707.99 and 178,978,240.72

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Solution

The fourth proportional to 318,234,383.15, 439,139,707.99 and 178,978,240.72 is: 246,976,620.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,234,383.15 : 439,139,707.99 = 178,978,240.72 : x
  2. Step 2: Convert to fraction form
    318,234,383.15/439,139,707.99 = 178,978,240.72/x
  3. Step 3: Cross multiply
    318,234,383.15x = 439,139,707.99 × 178,978,240.72
  4. Step 4: Simplify right side
    318,234,383.15x = 78,596,452,366,344,736
  5. Step 5: Solve for x
    x = 78,596,452,366,344,736/318,234,383.15
  6. Step 6: Final answer
    x = 246,976,620.15

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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.