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Finding the Fourth Proportional to 418,809.50, 626,629.01 and 248,122.86

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Solution

The fourth proportional to 418,809.50, 626,629.01 and 248,122.86 is: 371,245.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,809.50 : 626,629.01 = 248,122.86 : x
  2. Step 2: Convert to fraction form
    418,809.50/626,629.01 = 248,122.86/x
  3. Step 3: Cross multiply
    418,809.50x = 626,629.01 × 248,122.86
  4. Step 4: Simplify right side
    418,809.50x = 155,480,980,879.55
  5. Step 5: Solve for x
    x = 155,480,980,879.55/418,809.50
  6. Step 6: Final answer
    x = 371,245.12

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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.