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Finding the Fourth Proportional to 442,959.60, 664,439.40 and 293,368.80

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Solution

The fourth proportional to 442,959.60, 664,439.40 and 293,368.80 is: 440,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,959.60 : 664,439.40 = 293,368.80 : x
  2. Step 2: Convert to fraction form
    442,959.60/664,439.40 = 293,368.80/x
  3. Step 3: Cross multiply
    442,959.60x = 664,439.40 × 293,368.80
  4. Step 4: Simplify right side
    442,959.60x = 194,925,789,450.72
  5. Step 5: Solve for x
    x = 194,925,789,450.72/442,959.60
  6. Step 6: Final answer
    x = 440,053.20

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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.