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Finding the Fourth Proportional to 442,905.30, 664,649.55 and 253,365.30

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Solution

The fourth proportional to 442,905.30, 664,649.55 and 253,365.30 is: 380,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,905.30 : 664,649.55 = 253,365.30 : x
  2. Step 2: Convert to fraction form
    442,905.30/664,649.55 = 253,365.30/x
  3. Step 3: Cross multiply
    442,905.30x = 664,649.55 × 253,365.30
  4. Step 4: Simplify right side
    442,905.30x = 168,399,132,630.62
  5. Step 5: Solve for x
    x = 168,399,132,630.62/442,905.30
  6. Step 6: Final answer
    x = 380,214.76

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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.