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Finding the Fourth Proportional to 328,931.52, 493,399.68 and 79,613.52

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Solution

The fourth proportional to 328,931.52, 493,399.68 and 79,613.52 is: 119,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,931.52 : 493,399.68 = 79,613.52 : x
  2. Step 2: Convert to fraction form
    328,931.52/493,399.68 = 79,613.52/x
  3. Step 3: Cross multiply
    328,931.52x = 493,399.68 × 79,613.52
  4. Step 4: Simplify right side
    328,931.52x = 39,281,285,291.67
  5. Step 5: Solve for x
    x = 39,281,285,291.67/328,931.52
  6. Step 6: Final answer
    x = 119,420.86

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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.