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Finding the Fourth Proportional to 415,051.20, 621,578.88 and 237,018.56

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Solution

The fourth proportional to 415,051.20, 621,578.88 and 237,018.56 is: 354,957.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,051.20 : 621,578.88 = 237,018.56 : x
  2. Step 2: Convert to fraction form
    415,051.20/621,578.88 = 237,018.56/x
  3. Step 3: Cross multiply
    415,051.20x = 621,578.88 × 237,018.56
  4. Step 4: Simplify right side
    415,051.20x = 147,325,731,064.01
  5. Step 5: Solve for x
    x = 147,325,731,064.01/415,051.20
  6. Step 6: Final answer
    x = 354,957.97

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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.