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Finding the Fourth Proportional to 311,243.26, 466,495.80 and 279,504.40

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Solution

The fourth proportional to 311,243.26, 466,495.80 and 279,504.40 is: 418,925.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,243.26 : 466,495.80 = 279,504.40 : x
  2. Step 2: Convert to fraction form
    311,243.26/466,495.80 = 279,504.40/x
  3. Step 3: Cross multiply
    311,243.26x = 466,495.80 × 279,504.40
  4. Step 4: Simplify right side
    311,243.26x = 130,387,628,681.52
  5. Step 5: Solve for x
    x = 130,387,628,681.52/311,243.26
  6. Step 6: Final answer
    x = 418,925.15

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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.