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Finding the Fourth Proportional to 392,911.24, 542,221.14 and 214,063.24

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Solution

The fourth proportional to 392,911.24, 542,221.14 and 214,063.24 is: 295,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,911.24 : 542,221.14 = 214,063.24 : x
  2. Step 2: Convert to fraction form
    392,911.24/542,221.14 = 214,063.24/x
  3. Step 3: Cross multiply
    392,911.24x = 542,221.14 × 214,063.24
  4. Step 4: Simplify right side
    392,911.24x = 116,069,614,024.89
  5. Step 5: Solve for x
    x = 116,069,614,024.89/392,911.24
  6. Step 6: Final answer
    x = 295,409.25

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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.