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Finding the Fourth Proportional to 425,430.44, 638,256.35 and 159,211.52

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Solution

The fourth proportional to 425,430.44, 638,256.35 and 159,211.52 is: 238,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,430.44 : 638,256.35 = 159,211.52 : x
  2. Step 2: Convert to fraction form
    425,430.44/638,256.35 = 159,211.52/x
  3. Step 3: Cross multiply
    425,430.44x = 638,256.35 × 159,211.52
  4. Step 4: Simplify right side
    425,430.44x = 101,617,760,839.90
  5. Step 5: Solve for x
    x = 101,617,760,839.90/425,430.44
  6. Step 6: Final answer
    x = 238,858.70

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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.