Home / 485,184,175.20-728,028,205.20-212,582,498.40

Finding the Fourth Proportional to 485,184,175.20, 728,028,205.20 and 212,582,498.40

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Solution

The fourth proportional to 485,184,175.20, 728,028,205.20 and 212,582,498.40 is: 318,984,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,184,175.20 : 728,028,205.20 = 212,582,498.40 : x
  2. Step 2: Convert to fraction form
    485,184,175.20/728,028,205.20 = 212,582,498.40/x
  3. Step 3: Cross multiply
    485,184,175.20x = 728,028,205.20 × 212,582,498.40
  4. Step 4: Simplify right side
    485,184,175.20x = 154,766,054,767,083,872
  5. Step 5: Solve for x
    x = 154,766,054,767,083,872/485,184,175.20
  6. Step 6: Final answer
    x = 318,984,135.67

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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.