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Finding the Fourth Proportional to 840,224.32, 1,260,330 and 209,133.92

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Solution

The fourth proportional to 840,224.32, 1,260,330 and 209,133.92 is: 313,699.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,224.32 : 1,260,330 = 209,133.92 : x
  2. Step 2: Convert to fraction form
    840,224.32/1,260,330 = 209,133.92/x
  3. Step 3: Cross multiply
    840,224.32x = 1,260,330 × 209,133.92
  4. Step 4: Simplify right side
    840,224.32x = 263,577,753,393.60
  5. Step 5: Solve for x
    x = 263,577,753,393.60/840,224.32
  6. Step 6: Final answer
    x = 313,699.27

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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.