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Finding the Fourth Proportional to 319,363, 479,042.58 and 82,705.08

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Solution

The fourth proportional to 319,363, 479,042.58 and 82,705.08 is: 124,057.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,363 : 479,042.58 = 82,705.08 : x
  2. Step 2: Convert to fraction form
    319,363/479,042.58 = 82,705.08/x
  3. Step 3: Cross multiply
    319,363x = 479,042.58 × 82,705.08
  4. Step 4: Simplify right side
    319,363x = 39,619,254,902.31
  5. Step 5: Solve for x
    x = 39,619,254,902.31/319,363
  6. Step 6: Final answer
    x = 124,057.12

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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.