Home / 211,551,439.80-317,327,159.70-138,992,028.60

Finding the Fourth Proportional to 211,551,439.80, 317,327,159.70 and 138,992,028.60

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Solution

The fourth proportional to 211,551,439.80, 317,327,159.70 and 138,992,028.60 is: 208,488,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,551,439.80 : 317,327,159.70 = 138,992,028.60 : x
  2. Step 2: Convert to fraction form
    211,551,439.80/317,327,159.70 = 138,992,028.60/x
  3. Step 3: Cross multiply
    211,551,439.80x = 317,327,159.70 × 138,992,028.60
  4. Step 4: Simplify right side
    211,551,439.80x = 44,105,945,656,579,160
  5. Step 5: Solve for x
    x = 44,105,945,656,579,160/211,551,439.80
  6. Step 6: Final answer
    x = 208,488,042.90

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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.