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Finding the Fourth Proportional to 443,165.40, 664,067.70 and 330,316.20

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Solution

The fourth proportional to 443,165.40, 664,067.70 and 330,316.20 is: 494,967.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,165.40 : 664,067.70 = 330,316.20 : x
  2. Step 2: Convert to fraction form
    443,165.40/664,067.70 = 330,316.20/x
  3. Step 3: Cross multiply
    443,165.40x = 664,067.70 × 330,316.20
  4. Step 4: Simplify right side
    443,165.40x = 219,352,319,206.74
  5. Step 5: Solve for x
    x = 219,352,319,206.74/443,165.40
  6. Step 6: Final answer
    x = 494,967.16

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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.