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Finding the Fourth Proportional to 289,794.40, 434,691.60 and 266,984.80

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Solution

The fourth proportional to 289,794.40, 434,691.60 and 266,984.80 is: 400,477.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,794.40 : 434,691.60 = 266,984.80 : x
  2. Step 2: Convert to fraction form
    289,794.40/434,691.60 = 266,984.80/x
  3. Step 3: Cross multiply
    289,794.40x = 434,691.60 × 266,984.80
  4. Step 4: Simplify right side
    289,794.40x = 116,056,049,887.68
  5. Step 5: Solve for x
    x = 116,056,049,887.68/289,794.40
  6. Step 6: Final answer
    x = 400,477.20

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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.