Home / 318,234,377.90-439,139,700.75-178,978,235.47

Finding the Fourth Proportional to 318,234,377.90, 439,139,700.75 and 178,978,235.47

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Solution

The fourth proportional to 318,234,377.90, 439,139,700.75 and 178,978,235.47 is: 246,976,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,234,377.90 : 439,139,700.75 = 178,978,235.47 : x
  2. Step 2: Convert to fraction form
    318,234,377.90/439,139,700.75 = 178,978,235.47/x
  3. Step 3: Cross multiply
    318,234,377.90x = 439,139,700.75 × 178,978,235.47
  4. Step 4: Simplify right side
    318,234,377.90x = 78,596,448,764,632,160
  5. Step 5: Solve for x
    x = 78,596,448,764,632,160/318,234,377.90
  6. Step 6: Final answer
    x = 246,976,612.91

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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.