Home / 212,205,542.70-318,355,788.33-64,664,649.78

Finding the Fourth Proportional to 212,205,542.70, 318,355,788.33 and 64,664,649.78

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Solution

The fourth proportional to 212,205,542.70, 318,355,788.33 and 64,664,649.78 is: 97,011,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,205,542.70 : 318,355,788.33 = 64,664,649.78 : x
  2. Step 2: Convert to fraction form
    212,205,542.70/318,355,788.33 = 64,664,649.78/x
  3. Step 3: Cross multiply
    212,205,542.70x = 318,355,788.33 × 64,664,649.78
  4. Step 4: Simplify right side
    212,205,542.70x = 20,586,365,556,783,780
  5. Step 5: Solve for x
    x = 20,586,365,556,783,780/212,205,542.70
  6. Step 6: Final answer
    x = 97,011,441.34

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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.