Home / 840,221.32-1,260,325.50-209,130.88

Finding the Fourth Proportional to 840,221.32, 1,260,325.50 and 209,130.88

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Solution

The fourth proportional to 840,221.32, 1,260,325.50 and 209,130.88 is: 313,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,221.32 : 1,260,325.50 = 209,130.88 : x
  2. Step 2: Convert to fraction form
    840,221.32/1,260,325.50 = 209,130.88/x
  3. Step 3: Cross multiply
    840,221.32x = 1,260,325.50 × 209,130.88
  4. Step 4: Simplify right side
    840,221.32x = 263,572,980,901.44
  5. Step 5: Solve for x
    x = 263,572,980,901.44/840,221.32
  6. Step 6: Final answer
    x = 313,694.71

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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.