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Finding the Fourth Proportional to 423,845.87, 636,016.66 and 157,794.89

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Solution

The fourth proportional to 423,845.87, 636,016.66 and 157,794.89 is: 236,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,845.87 : 636,016.66 = 157,794.89 : x
  2. Step 2: Convert to fraction form
    423,845.87/636,016.66 = 157,794.89/x
  3. Step 3: Cross multiply
    423,845.87x = 636,016.66 × 157,794.89
  4. Step 4: Simplify right side
    423,845.87x = 100,360,175,328.30
  5. Step 5: Solve for x
    x = 100,360,175,328.30/423,845.87
  6. Step 6: Final answer
    x = 236,784.60

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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.