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Finding the Fourth Proportional to 351,848.40, 527,772.60 and 85,606.80

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Solution

The fourth proportional to 351,848.40, 527,772.60 and 85,606.80 is: 128,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,848.40 : 527,772.60 = 85,606.80 : x
  2. Step 2: Convert to fraction form
    351,848.40/527,772.60 = 85,606.80/x
  3. Step 3: Cross multiply
    351,848.40x = 527,772.60 × 85,606.80
  4. Step 4: Simplify right side
    351,848.40x = 45,180,923,413.68
  5. Step 5: Solve for x
    x = 45,180,923,413.68/351,848.40
  6. Step 6: Final answer
    x = 128,410.20

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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.