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Finding the Fourth Proportional to 499,579.65, 689,419.43 and 270,136.39

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Solution

The fourth proportional to 499,579.65, 689,419.43 and 270,136.39 is: 372,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,579.65 : 689,419.43 = 270,136.39 : x
  2. Step 2: Convert to fraction form
    499,579.65/689,419.43 = 270,136.39/x
  3. Step 3: Cross multiply
    499,579.65x = 689,419.43 × 270,136.39
  4. Step 4: Simplify right side
    499,579.65x = 186,237,272,823.01
  5. Step 5: Solve for x
    x = 186,237,272,823.01/499,579.65
  6. Step 6: Final answer
    x = 372,787.95

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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.