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Finding the Fourth Proportional to 328,537.70, 492,806.55 and 91,898.90

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Solution

The fourth proportional to 328,537.70, 492,806.55 and 91,898.90 is: 137,848.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,537.70 : 492,806.55 = 91,898.90 : x
  2. Step 2: Convert to fraction form
    328,537.70/492,806.55 = 91,898.90/x
  3. Step 3: Cross multiply
    328,537.70x = 492,806.55 × 91,898.90
  4. Step 4: Simplify right side
    328,537.70x = 45,288,379,857.80
  5. Step 5: Solve for x
    x = 45,288,379,857.80/328,537.70
  6. Step 6: Final answer
    x = 137,848.35

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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.