Home / 442,931.20-664,396.80-307,628.80

Finding the Fourth Proportional to 442,931.20, 664,396.80 and 307,628.80

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Solution

The fourth proportional to 442,931.20, 664,396.80 and 307,628.80 is: 461,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,931.20 : 664,396.80 = 307,628.80 : x
  2. Step 2: Convert to fraction form
    442,931.20/664,396.80 = 307,628.80/x
  3. Step 3: Cross multiply
    442,931.20x = 664,396.80 × 307,628.80
  4. Step 4: Simplify right side
    442,931.20x = 204,387,590,307.84
  5. Step 5: Solve for x
    x = 204,387,590,307.84/442,931.20
  6. Step 6: Final answer
    x = 461,443.20

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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.