Home / 315,022,690.20-472,392,317.70-120,869,578.20

Finding the Fourth Proportional to 315,022,690.20, 472,392,317.70 and 120,869,578.20

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Solution

The fourth proportional to 315,022,690.20, 472,392,317.70 and 120,869,578.20 is: 181,249,992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,022,690.20 : 472,392,317.70 = 120,869,578.20 : x
  2. Step 2: Convert to fraction form
    315,022,690.20/472,392,317.70 = 120,869,578.20/x
  3. Step 3: Cross multiply
    315,022,690.20x = 472,392,317.70 × 120,869,578.20
  4. Step 4: Simplify right side
    315,022,690.20x = 57,097,860,185,319,392
  5. Step 5: Solve for x
    x = 57,097,860,185,319,392/315,022,690.20
  6. Step 6: Final answer
    x = 181,249,992.34

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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.