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Finding the Fourth Proportional to 319,960.52, 479,641.62 and 142,371.08

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Solution

The fourth proportional to 319,960.52, 479,641.62 and 142,371.08 is: 213,423.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,960.52 : 479,641.62 = 142,371.08 : x
  2. Step 2: Convert to fraction form
    319,960.52/479,641.62 = 142,371.08/x
  3. Step 3: Cross multiply
    319,960.52x = 479,641.62 × 142,371.08
  4. Step 4: Simplify right side
    319,960.52x = 68,287,095,452.35
  5. Step 5: Solve for x
    x = 68,287,095,452.35/319,960.52
  6. Step 6: Final answer
    x = 213,423.50

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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.