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Finding the Fourth Proportional to 328,726.48, 493,089.72 and 79,408.48

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Solution

The fourth proportional to 328,726.48, 493,089.72 and 79,408.48 is: 119,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,726.48 : 493,089.72 = 79,408.48 : x
  2. Step 2: Convert to fraction form
    328,726.48/493,089.72 = 79,408.48/x
  3. Step 3: Cross multiply
    328,726.48x = 493,089.72 × 79,408.48
  4. Step 4: Simplify right side
    328,726.48x = 39,155,505,168.83
  5. Step 5: Solve for x
    x = 39,155,505,168.83/328,726.48
  6. Step 6: Final answer
    x = 119,112.72

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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.