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Finding the Fourth Proportional to 328,217.70, 492,326.55 and 302,556.90

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Solution

The fourth proportional to 328,217.70, 492,326.55 and 302,556.90 is: 453,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,217.70 : 492,326.55 = 302,556.90 : x
  2. Step 2: Convert to fraction form
    328,217.70/492,326.55 = 302,556.90/x
  3. Step 3: Cross multiply
    328,217.70x = 492,326.55 × 302,556.90
  4. Step 4: Simplify right side
    328,217.70x = 148,956,794,755.70
  5. Step 5: Solve for x
    x = 148,956,794,755.70/328,217.70
  6. Step 6: Final answer
    x = 453,835.35

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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.