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Finding the Fourth Proportional to 404,940.60, 607,410.90 and 272,230.20

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Solution

The fourth proportional to 404,940.60, 607,410.90 and 272,230.20 is: 408,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,940.60 : 607,410.90 = 272,230.20 : x
  2. Step 2: Convert to fraction form
    404,940.60/607,410.90 = 272,230.20/x
  3. Step 3: Cross multiply
    404,940.60x = 607,410.90 × 272,230.20
  4. Step 4: Simplify right side
    404,940.60x = 165,355,590,789.18
  5. Step 5: Solve for x
    x = 165,355,590,789.18/404,940.60
  6. Step 6: Final answer
    x = 408,345.30

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1.5x scale

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.