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Finding the Fourth Proportional to 399,971.52, 551,966.60 and 270,949.46

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Solution

The fourth proportional to 399,971.52, 551,966.60 and 270,949.46 is: 373,914.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,971.52 : 551,966.60 = 270,949.46 : x
  2. Step 2: Convert to fraction form
    399,971.52/551,966.60 = 270,949.46/x
  3. Step 3: Cross multiply
    399,971.52x = 551,966.60 × 270,949.46
  4. Step 4: Simplify right side
    399,971.52x = 149,555,050,125.58
  5. Step 5: Solve for x
    x = 149,555,050,125.58/399,971.52
  6. Step 6: Final answer
    x = 373,914.25

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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.