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Finding the Fourth Proportional to 319,260.29, 478,876.59 and 79,369.17

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Solution

The fourth proportional to 319,260.29, 478,876.59 and 79,369.17 is: 119,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,260.29 : 478,876.59 = 79,369.17 : x
  2. Step 2: Convert to fraction form
    319,260.29/478,876.59 = 79,369.17/x
  3. Step 3: Cross multiply
    319,260.29x = 478,876.59 × 79,369.17
  4. Step 4: Simplify right side
    319,260.29x = 38,008,035,684.94
  5. Step 5: Solve for x
    x = 38,008,035,684.94/319,260.29
  6. Step 6: Final answer
    x = 119,050.31

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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.