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Finding the Fourth Proportional to 425,466.72, 638,275.95 and 141,174.27

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Solution

The fourth proportional to 425,466.72, 638,275.95 and 141,174.27 is: 211,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,466.72 : 638,275.95 = 141,174.27 : x
  2. Step 2: Convert to fraction form
    425,466.72/638,275.95 = 141,174.27/x
  3. Step 3: Cross multiply
    425,466.72x = 638,275.95 × 141,174.27
  4. Step 4: Simplify right side
    425,466.72x = 90,108,141,299.81
  5. Step 5: Solve for x
    x = 90,108,141,299.81/425,466.72
  6. Step 6: Final answer
    x = 211,786.58

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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.