Home / 212,048,540.80-317,886,187.20-143,669,507.20

Finding the Fourth Proportional to 212,048,540.80, 317,886,187.20 and 143,669,507.20

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Solution

The fourth proportional to 212,048,540.80, 317,886,187.20 and 143,669,507.20 is: 215,377,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,048,540.80 : 317,886,187.20 = 143,669,507.20 : x
  2. Step 2: Convert to fraction form
    212,048,540.80/317,886,187.20 = 143,669,507.20/x
  3. Step 3: Cross multiply
    212,048,540.80x = 317,886,187.20 × 143,669,507.20
  4. Step 4: Simplify right side
    212,048,540.80x = 45,670,551,860,710,944
  5. Step 5: Solve for x
    x = 45,670,551,860,710,944/212,048,540.80
  6. Step 6: Final answer
    x = 215,377,817.21

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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.