Home / 328,091.10-492,136.65-280,851.90

Finding the Fourth Proportional to 328,091.10, 492,136.65 and 280,851.90

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Solution

The fourth proportional to 328,091.10, 492,136.65 and 280,851.90 is: 421,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,091.10 : 492,136.65 = 280,851.90 : x
  2. Step 2: Convert to fraction form
    328,091.10/492,136.65 = 280,851.90/x
  3. Step 3: Cross multiply
    328,091.10x = 492,136.65 × 280,851.90
  4. Step 4: Simplify right side
    328,091.10x = 138,217,513,212.14
  5. Step 5: Solve for x
    x = 138,217,513,212.14/328,091.10
  6. Step 6: Final answer
    x = 421,277.85

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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.