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Finding the Fourth Proportional to 402,704.80, 603,673.20 and 149,917.60

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Solution

The fourth proportional to 402,704.80, 603,673.20 and 149,917.60 is: 224,733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,704.80 : 603,673.20 = 149,917.60 : x
  2. Step 2: Convert to fraction form
    402,704.80/603,673.20 = 149,917.60/x
  3. Step 3: Cross multiply
    402,704.80x = 603,673.20 × 149,917.60
  4. Step 4: Simplify right side
    402,704.80x = 90,501,237,328.32
  5. Step 5: Solve for x
    x = 90,501,237,328.32/402,704.80
  6. Step 6: Final answer
    x = 224,733.45

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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.