Home / 427,792.08-642,851.28-228,253.44

Finding the Fourth Proportional to 427,792.08, 642,851.28 and 228,253.44

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Solution

The fourth proportional to 427,792.08, 642,851.28 and 228,253.44 is: 343,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,792.08 : 642,851.28 = 228,253.44 : x
  2. Step 2: Convert to fraction form
    427,792.08/642,851.28 = 228,253.44/x
  3. Step 3: Cross multiply
    427,792.08x = 642,851.28 × 228,253.44
  4. Step 4: Simplify right side
    427,792.08x = 146,733,016,068.40
  5. Step 5: Solve for x
    x = 146,733,016,068.40/427,792.08
  6. Step 6: Final answer
    x = 343,000.78

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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.