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Finding the Fourth Proportional to 425,707.44, 638,376.09 and 122,034.72

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Solution

The fourth proportional to 425,707.44, 638,376.09 and 122,034.72 is: 182,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,707.44 : 638,376.09 = 122,034.72 : x
  2. Step 2: Convert to fraction form
    425,707.44/638,376.09 = 122,034.72/x
  3. Step 3: Cross multiply
    425,707.44x = 638,376.09 × 122,034.72
  4. Step 4: Simplify right side
    425,707.44x = 77,904,047,397.84
  5. Step 5: Solve for x
    x = 77,904,047,397.84/425,707.44
  6. Step 6: Final answer
    x = 182,999.03

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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.