Home / 211,545,310.80-317,317,966.20-138,985,899.60

Finding the Fourth Proportional to 211,545,310.80, 317,317,966.20 and 138,985,899.60

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Solution

The fourth proportional to 211,545,310.80, 317,317,966.20 and 138,985,899.60 is: 208,478,849.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,545,310.80 : 317,317,966.20 = 138,985,899.60 : x
  2. Step 2: Convert to fraction form
    211,545,310.80/317,317,966.20 = 138,985,899.60/x
  3. Step 3: Cross multiply
    211,545,310.80x = 317,317,966.20 × 138,985,899.60
  4. Step 4: Simplify right side
    211,545,310.80x = 44,102,722,991,549,392
  5. Step 5: Solve for x
    x = 44,102,722,991,549,392/211,545,310.80
  6. Step 6: Final answer
    x = 208,478,849.40

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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.