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Finding the Fourth Proportional to 425,340.72, 637,816.68 and 158,905.80

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Solution

The fourth proportional to 425,340.72, 637,816.68 and 158,905.80 is: 238,286.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,340.72 : 637,816.68 = 158,905.80 : x
  2. Step 2: Convert to fraction form
    425,340.72/637,816.68 = 158,905.80/x
  3. Step 3: Cross multiply
    425,340.72x = 637,816.68 × 158,905.80
  4. Step 4: Simplify right side
    425,340.72x = 101,352,769,788.74
  5. Step 5: Solve for x
    x = 101,352,769,788.74/425,340.72
  6. Step 6: Final answer
    x = 238,286.07

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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.