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Finding the Fourth Proportional to 484,490.40, 726,044.40 and 357,136.80

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Solution

The fourth proportional to 484,490.40, 726,044.40 and 357,136.80 is: 535,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,490.40 : 726,044.40 = 357,136.80 : x
  2. Step 2: Convert to fraction form
    484,490.40/726,044.40 = 357,136.80/x
  3. Step 3: Cross multiply
    484,490.40x = 726,044.40 × 357,136.80
  4. Step 4: Simplify right side
    484,490.40x = 259,297,173,673.92
  5. Step 5: Solve for x
    x = 259,297,173,673.92/484,490.40
  6. Step 6: Final answer
    x = 535,195.69

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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.