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Finding the Fourth Proportional to 443,073.93, 611,195.82 and 290,358.46

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Solution

The fourth proportional to 443,073.93, 611,195.82 and 290,358.46 is: 400,533.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,073.93 : 611,195.82 = 290,358.46 : x
  2. Step 2: Convert to fraction form
    443,073.93/611,195.82 = 290,358.46/x
  3. Step 3: Cross multiply
    443,073.93x = 611,195.82 × 290,358.46
  4. Step 4: Simplify right side
    443,073.93x = 177,465,873,290.81
  5. Step 5: Solve for x
    x = 177,465,873,290.81/443,073.93
  6. Step 6: Final answer
    x = 400,533.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.