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Finding the Fourth Proportional to 356,943.90, 535,891.02 and 207,291.60

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Solution

The fourth proportional to 356,943.90, 535,891.02 and 207,291.60 is: 311,213.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,943.90 : 535,891.02 = 207,291.60 : x
  2. Step 2: Convert to fraction form
    356,943.90/535,891.02 = 207,291.60/x
  3. Step 3: Cross multiply
    356,943.90x = 535,891.02 × 207,291.60
  4. Step 4: Simplify right side
    356,943.90x = 111,085,706,961.43
  5. Step 5: Solve for x
    x = 111,085,706,961.43/356,943.90
  6. Step 6: Final answer
    x = 311,213.35

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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.