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Finding the Fourth Proportional to 319,071.60, 479,320.20 and 266,583.60

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Solution

The fourth proportional to 319,071.60, 479,320.20 and 266,583.60 is: 400,470.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,071.60 : 479,320.20 = 266,583.60 : x
  2. Step 2: Convert to fraction form
    319,071.60/479,320.20 = 266,583.60/x
  3. Step 3: Cross multiply
    319,071.60x = 479,320.20 × 266,583.60
  4. Step 4: Simplify right side
    319,071.60x = 127,778,904,468.72
  5. Step 5: Solve for x
    x = 127,778,904,468.72/319,071.60
  6. Step 6: Final answer
    x = 400,470.94

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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.