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Finding the Fourth Proportional to 425,503, 638,363.88 and 159,267.36

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Solution

The fourth proportional to 425,503, 638,363.88 and 159,267.36 is: 238,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,503 : 638,363.88 = 159,267.36 : x
  2. Step 2: Convert to fraction form
    425,503/638,363.88 = 159,267.36/x
  3. Step 3: Cross multiply
    425,503x = 638,363.88 × 159,267.36
  4. Step 4: Simplify right side
    425,503x = 101,670,529,886.96
  5. Step 5: Solve for x
    x = 101,670,529,886.96/425,503
  6. Step 6: Final answer
    x = 238,941.98

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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.