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Finding the Fourth Proportional to 392,035.37, 587,982.78 and 103,848.91

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Solution

The fourth proportional to 392,035.37, 587,982.78 and 103,848.91 is: 155,754.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,035.37 : 587,982.78 = 103,848.91 : x
  2. Step 2: Convert to fraction form
    392,035.37/587,982.78 = 103,848.91/x
  3. Step 3: Cross multiply
    392,035.37x = 587,982.78 × 103,848.91
  4. Step 4: Simplify right side
    392,035.37x = 61,061,369,331.81
  5. Step 5: Solve for x
    x = 61,061,369,331.81/392,035.37
  6. Step 6: Final answer
    x = 155,754.75

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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.