Home / 427,793.03-642,320.35-238,623

Finding the Fourth Proportional to 427,793.03, 642,320.35 and 238,623

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Solution

The fourth proportional to 427,793.03, 642,320.35 and 238,623 is: 358,286.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,793.03 : 642,320.35 = 238,623 : x
  2. Step 2: Convert to fraction form
    427,793.03/642,320.35 = 238,623/x
  3. Step 3: Cross multiply
    427,793.03x = 642,320.35 × 238,623
  4. Step 4: Simplify right side
    427,793.03x = 153,272,408,878.05
  5. Step 5: Solve for x
    x = 153,272,408,878.05/427,793.03
  6. Step 6: Final answer
    x = 358,286.36

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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.