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Finding the Fourth Proportional to 392,910.24, 542,219.76 and 214,062.24

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Solution

The fourth proportional to 392,910.24, 542,219.76 and 214,062.24 is: 295,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,910.24 : 542,219.76 = 214,062.24 : x
  2. Step 2: Convert to fraction form
    392,910.24/542,219.76 = 214,062.24/x
  3. Step 3: Cross multiply
    392,910.24x = 542,219.76 × 214,062.24
  4. Step 4: Simplify right side
    392,910.24x = 116,068,776,397.86
  5. Step 5: Solve for x
    x = 116,068,776,397.86/392,910.24
  6. Step 6: Final answer
    x = 295,407.87

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1.5x scale

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.