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Finding the Fourth Proportional to 328,816.20, 493,224.30 and 310,445.40

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Solution

The fourth proportional to 328,816.20, 493,224.30 and 310,445.40 is: 465,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,816.20 : 493,224.30 = 310,445.40 : x
  2. Step 2: Convert to fraction form
    328,816.20/493,224.30 = 310,445.40/x
  3. Step 3: Cross multiply
    328,816.20x = 493,224.30 × 310,445.40
  4. Step 4: Simplify right side
    328,816.20x = 153,119,215,103.22
  5. Step 5: Solve for x
    x = 153,119,215,103.22/328,816.20
  6. Step 6: Final answer
    x = 465,668.10

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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.