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Finding the Fourth Proportional to 211,932, 292,296.99 and 139,409.34

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Solution

The fourth proportional to 211,932, 292,296.99 and 139,409.34 is: 192,273.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,932 : 292,296.99 = 139,409.34 : x
  2. Step 2: Convert to fraction form
    211,932/292,296.99 = 139,409.34/x
  3. Step 3: Cross multiply
    211,932x = 292,296.99 × 139,409.34
  4. Step 4: Simplify right side
    211,932x = 40,748,930,459.89
  5. Step 5: Solve for x
    x = 40,748,930,459.89/211,932
  6. Step 6: Final answer
    x = 192,273.61

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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.