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Finding the Fourth Proportional to 319,050.82, 478,652.58 and 91,349.61

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Solution

The fourth proportional to 319,050.82, 478,652.58 and 91,349.61 is: 137,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,050.82 : 478,652.58 = 91,349.61 : x
  2. Step 2: Convert to fraction form
    319,050.82/478,652.58 = 91,349.61/x
  3. Step 3: Cross multiply
    319,050.82x = 478,652.58 × 91,349.61
  4. Step 4: Simplify right side
    319,050.82x = 43,724,726,508.49
  5. Step 5: Solve for x
    x = 43,724,726,508.49/319,050.82
  6. Step 6: Final answer
    x = 137,046.28

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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.