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Finding the Fourth Proportional to 321,440.70, 482,193.44 and 84,799.74

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Solution

The fourth proportional to 321,440.70, 482,193.44 and 84,799.74 is: 127,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,440.70 : 482,193.44 = 84,799.74 : x
  2. Step 2: Convert to fraction form
    321,440.70/482,193.44 = 84,799.74/x
  3. Step 3: Cross multiply
    321,440.70x = 482,193.44 × 84,799.74
  4. Step 4: Simplify right side
    321,440.70x = 40,889,878,341.71
  5. Step 5: Solve for x
    x = 40,889,878,341.71/321,440.70
  6. Step 6: Final answer
    x = 127,208.15

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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.