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Finding the Fourth Proportional to 808,220.80, 1,212,388.80 and 247,254.40

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Solution

The fourth proportional to 808,220.80, 1,212,388.80 and 247,254.40 is: 370,899.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,220.80 : 1,212,388.80 = 247,254.40 : x
  2. Step 2: Convert to fraction form
    808,220.80/1,212,388.80 = 247,254.40/x
  3. Step 3: Cross multiply
    808,220.80x = 1,212,388.80 × 247,254.40
  4. Step 4: Simplify right side
    808,220.80x = 299,768,465,310.72
  5. Step 5: Solve for x
    x = 299,768,465,310.72/808,220.80
  6. Step 6: Final answer
    x = 370,899.22

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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.