Home / 427,438.84-641,379.02-187,721.10

Finding the Fourth Proportional to 427,438.84, 641,379.02 and 187,721.10

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Solution

The fourth proportional to 427,438.84, 641,379.02 and 187,721.10 is: 281,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,438.84 : 641,379.02 = 187,721.10 : x
  2. Step 2: Convert to fraction form
    427,438.84/641,379.02 = 187,721.10/x
  3. Step 3: Cross multiply
    427,438.84x = 641,379.02 × 187,721.10
  4. Step 4: Simplify right side
    427,438.84x = 120,400,375,151.32
  5. Step 5: Solve for x
    x = 120,400,375,151.32/427,438.84
  6. Step 6: Final answer
    x = 281,678.60

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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.