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Finding the Fourth Proportional to 321,599.04, 482,421.60 and 84,939.36

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Solution

The fourth proportional to 321,599.04, 482,421.60 and 84,939.36 is: 127,415.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,599.04 : 482,421.60 = 84,939.36 : x
  2. Step 2: Convert to fraction form
    321,599.04/482,421.60 = 84,939.36/x
  3. Step 3: Cross multiply
    321,599.04x = 482,421.60 × 84,939.36
  4. Step 4: Simplify right side
    321,599.04x = 40,976,581,954.18
  5. Step 5: Solve for x
    x = 40,976,581,954.18/321,599.04
  6. Step 6: Final answer
    x = 127,415.13

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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.