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Finding the Fourth Proportional to 403,351.60, 606,339.60 and 285,836.80

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Solution

The fourth proportional to 403,351.60, 606,339.60 and 285,836.80 is: 429,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,351.60 : 606,339.60 = 285,836.80 : x
  2. Step 2: Convert to fraction form
    403,351.60/606,339.60 = 285,836.80/x
  3. Step 3: Cross multiply
    403,351.60x = 606,339.60 × 285,836.80
  4. Step 4: Simplify right side
    403,351.60x = 173,314,170,977.28
  5. Step 5: Solve for x
    x = 173,314,170,977.28/403,351.60
  6. Step 6: Final answer
    x = 429,685.10

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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.