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Finding the Fourth Proportional to 493,138.30, 739,707.45 and 177,554.20

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Solution

The fourth proportional to 493,138.30, 739,707.45 and 177,554.20 is: 266,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,138.30 : 739,707.45 = 177,554.20 : x
  2. Step 2: Convert to fraction form
    493,138.30/739,707.45 = 177,554.20/x
  3. Step 3: Cross multiply
    493,138.30x = 739,707.45 × 177,554.20
  4. Step 4: Simplify right side
    493,138.30x = 131,338,164,518.79
  5. Step 5: Solve for x
    x = 131,338,164,518.79/493,138.30
  6. Step 6: Final answer
    x = 266,331.30

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Similar ratio
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1.5x scale

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.