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Finding the Fourth Proportional to 321,377.19, 482,070.54 and 121,643.95

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Solution

The fourth proportional to 321,377.19, 482,070.54 and 121,643.95 is: 182,467.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,377.19 : 482,070.54 = 121,643.95 : x
  2. Step 2: Convert to fraction form
    321,377.19/482,070.54 = 121,643.95/x
  3. Step 3: Cross multiply
    321,377.19x = 482,070.54 × 121,643.95
  4. Step 4: Simplify right side
    321,377.19x = 58,640,962,253.88
  5. Step 5: Solve for x
    x = 58,640,962,253.88/321,377.19
  6. Step 6: Final answer
    x = 182,467.72

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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.