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Finding the Fourth Proportional to 425,503.50, 638,364.63 and 159,267.84

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Solution

The fourth proportional to 425,503.50, 638,364.63 and 159,267.84 is: 238,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,503.50 : 638,364.63 = 159,267.84 : x
  2. Step 2: Convert to fraction form
    425,503.50/638,364.63 = 159,267.84/x
  3. Step 3: Cross multiply
    425,503.50x = 638,364.63 × 159,267.84
  4. Step 4: Simplify right side
    425,503.50x = 101,670,955,752.50
  5. Step 5: Solve for x
    x = 101,670,955,752.50/425,503.50
  6. Step 6: Final answer
    x = 238,942.70

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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.