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Finding the Fourth Proportional to 415,761.40, 624,006.60 and 247,070.80

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Solution

The fourth proportional to 415,761.40, 624,006.60 and 247,070.80 is: 370,822.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,761.40 : 624,006.60 = 247,070.80 : x
  2. Step 2: Convert to fraction form
    415,761.40/624,006.60 = 247,070.80/x
  3. Step 3: Cross multiply
    415,761.40x = 624,006.60 × 247,070.80
  4. Step 4: Simplify right side
    415,761.40x = 154,173,809,867.28
  5. Step 5: Solve for x
    x = 154,173,809,867.28/415,761.40
  6. Step 6: Final answer
    x = 370,822.81

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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.