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Finding the Fourth Proportional to 328,722.24, 493,082.28 and 79,404.24

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Solution

The fourth proportional to 328,722.24, 493,082.28 and 79,404.24 is: 119,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,722.24 : 493,082.28 = 79,404.24 : x
  2. Step 2: Convert to fraction form
    328,722.24/493,082.28 = 79,404.24/x
  3. Step 3: Cross multiply
    328,722.24x = 493,082.28 × 79,404.24
  4. Step 4: Simplify right side
    328,722.24x = 39,152,823,700.87
  5. Step 5: Solve for x
    x = 39,152,823,700.87/328,722.24
  6. Step 6: Final answer
    x = 119,106.10

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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.