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Finding the Fourth Proportional to 328,711.96, 493,071.66 and 115,484.92

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Solution

The fourth proportional to 328,711.96, 493,071.66 and 115,484.92 is: 173,228.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,711.96 : 493,071.66 = 115,484.92 : x
  2. Step 2: Convert to fraction form
    328,711.96/493,071.66 = 115,484.92/x
  3. Step 3: Cross multiply
    328,711.96x = 493,071.66 × 115,484.92
  4. Step 4: Simplify right side
    328,711.96x = 56,942,341,209.37
  5. Step 5: Solve for x
    x = 56,942,341,209.37/328,711.96
  6. Step 6: Final answer
    x = 173,228.69

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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.