Home / 318,485,535.11-439,283,636.67-212,585,556.70

Finding the Fourth Proportional to 318,485,535.11, 439,283,636.67 and 212,585,556.70

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Solution

The fourth proportional to 318,485,535.11, 439,283,636.67 and 212,585,556.70 is: 293,216,947.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,485,535.11 : 439,283,636.67 = 212,585,556.70 : x
  2. Step 2: Convert to fraction form
    318,485,535.11/439,283,636.67 = 212,585,556.70/x
  3. Step 3: Cross multiply
    318,485,535.11x = 439,283,636.67 × 212,585,556.70
  4. Step 4: Simplify right side
    318,485,535.11x = 93,385,356,449,567,744
  5. Step 5: Solve for x
    x = 93,385,356,449,567,744/318,485,535.11
  6. Step 6: Final answer
    x = 293,216,947.57

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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.