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Finding the Fourth Proportional to 328,683.78, 493,026.06 and 79,365.78

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Solution

The fourth proportional to 328,683.78, 493,026.06 and 79,365.78 is: 119,048.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,683.78 : 493,026.06 = 79,365.78 : x
  2. Step 2: Convert to fraction form
    328,683.78/493,026.06 = 79,365.78/x
  3. Step 3: Cross multiply
    328,683.78x = 493,026.06 × 79,365.78
  4. Step 4: Simplify right side
    328,683.78x = 39,129,397,812.23
  5. Step 5: Solve for x
    x = 39,129,397,812.23/328,683.78
  6. Step 6: Final answer
    x = 119,048.76

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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.