Home / 209,314,896.20-313,986,341.10-71,138,486.60

Finding the Fourth Proportional to 209,314,896.20, 313,986,341.10 and 71,138,486.60

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Solution

The fourth proportional to 209,314,896.20, 313,986,341.10 and 71,138,486.60 is: 106,712,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,314,896.20 : 313,986,341.10 = 71,138,486.60 : x
  2. Step 2: Convert to fraction form
    209,314,896.20/313,986,341.10 = 71,138,486.60/x
  3. Step 3: Cross multiply
    209,314,896.20x = 313,986,341.10 × 71,138,486.60
  4. Step 4: Simplify right side
    209,314,896.20x = 22,336,513,118,925,380
  5. Step 5: Solve for x
    x = 22,336,513,118,925,380/209,314,896.20
  6. Step 6: Final answer
    x = 106,712,486.90

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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.