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Finding the Fourth Proportional to 415,763.40, 624,009.60 and 247,072.80

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Solution

The fourth proportional to 415,763.40, 624,009.60 and 247,072.80 is: 370,825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,763.40 : 624,009.60 = 247,072.80 : x
  2. Step 2: Convert to fraction form
    415,763.40/624,009.60 = 247,072.80/x
  3. Step 3: Cross multiply
    415,763.40x = 624,009.60 × 247,072.80
  4. Step 4: Simplify right side
    415,763.40x = 154,175,799,098.88
  5. Step 5: Solve for x
    x = 154,175,799,098.88/415,763.40
  6. Step 6: Final answer
    x = 370,825.81

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1.5x scale

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.