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Finding the Fourth Proportional to 328,853.16, 493,275.42 and 79,533

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Solution

The fourth proportional to 328,853.16, 493,275.42 and 79,533 is: 119,298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,853.16 : 493,275.42 = 79,533 : x
  2. Step 2: Convert to fraction form
    328,853.16/493,275.42 = 79,533/x
  3. Step 3: Cross multiply
    328,853.16x = 493,275.42 × 79,533
  4. Step 4: Simplify right side
    328,853.16x = 39,231,673,978.86
  5. Step 5: Solve for x
    x = 39,231,673,978.86/328,853.16
  6. Step 6: Final answer
    x = 119,298.46

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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.