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Finding the Fourth Proportional to 338,735.02, 508,102.77 and 86,034.46

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Solution

The fourth proportional to 338,735.02, 508,102.77 and 86,034.46 is: 129,051.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,735.02 : 508,102.77 = 86,034.46 : x
  2. Step 2: Convert to fraction form
    338,735.02/508,102.77 = 86,034.46/x
  3. Step 3: Cross multiply
    338,735.02x = 508,102.77 × 86,034.46
  4. Step 4: Simplify right side
    338,735.02x = 43,714,347,011.28
  5. Step 5: Solve for x
    x = 43,714,347,011.28/338,735.02
  6. Step 6: Final answer
    x = 129,051.75

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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.