Home / 209,933,626.40-314,900,439.60-128,891,808.80

Finding the Fourth Proportional to 209,933,626.40, 314,900,439.60 and 128,891,808.80

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Solution

The fourth proportional to 209,933,626.40, 314,900,439.60 and 128,891,808.80 is: 193,337,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,933,626.40 : 314,900,439.60 = 128,891,808.80 : x
  2. Step 2: Convert to fraction form
    209,933,626.40/314,900,439.60 = 128,891,808.80/x
  3. Step 3: Cross multiply
    209,933,626.40x = 314,900,439.60 × 128,891,808.80
  4. Step 4: Simplify right side
    209,933,626.40x = 40,588,087,251,959,152
  5. Step 5: Solve for x
    x = 40,588,087,251,959,152/209,933,626.40
  6. Step 6: Final answer
    x = 193,337,713.20

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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.