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Finding the Fourth Proportional to 321,486.95, 482,250.54 and 84,829.93

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Solution

The fourth proportional to 321,486.95, 482,250.54 and 84,829.93 is: 127,250.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,486.95 : 482,250.54 = 84,829.93 : x
  2. Step 2: Convert to fraction form
    321,486.95/482,250.54 = 84,829.93/x
  3. Step 3: Cross multiply
    321,486.95x = 482,250.54 × 84,829.93
  4. Step 4: Simplify right side
    321,486.95x = 40,909,279,550.66
  5. Step 5: Solve for x
    x = 40,909,279,550.66/321,486.95
  6. Step 6: Final answer
    x = 127,250.20

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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.