Home / 386,558.22-533,440.05-212,127.90

Finding the Fourth Proportional to 386,558.22, 533,440.05 and 212,127.90

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Solution

The fourth proportional to 386,558.22, 533,440.05 and 212,127.90 is: 292,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,558.22 : 533,440.05 = 212,127.90 : x
  2. Step 2: Convert to fraction form
    386,558.22/533,440.05 = 212,127.90/x
  3. Step 3: Cross multiply
    386,558.22x = 533,440.05 × 212,127.90
  4. Step 4: Simplify right side
    386,558.22x = 113,157,517,582.40
  5. Step 5: Solve for x
    x = 113,157,517,582.40/386,558.22
  6. Step 6: Final answer
    x = 292,730.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.