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Finding the Fourth Proportional to 404,355.20, 606,970.20 and 254,764.40

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Solution

The fourth proportional to 404,355.20, 606,970.20 and 254,764.40 is: 382,422.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,355.20 : 606,970.20 = 254,764.40 : x
  2. Step 2: Convert to fraction form
    404,355.20/606,970.20 = 254,764.40/x
  3. Step 3: Cross multiply
    404,355.20x = 606,970.20 × 254,764.40
  4. Step 4: Simplify right side
    404,355.20x = 154,634,398,820.88
  5. Step 5: Solve for x
    x = 154,634,398,820.88/404,355.20
  6. Step 6: Final answer
    x = 382,422.18

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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.