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Finding the Fourth Proportional to 338,732.95, 508,099.65 and 86,032.39

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Solution

The fourth proportional to 338,732.95, 508,099.65 and 86,032.39 is: 129,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,732.95 : 508,099.65 = 86,032.39 : x
  2. Step 2: Convert to fraction form
    338,732.95/508,099.65 = 86,032.39/x
  3. Step 3: Cross multiply
    338,732.95x = 508,099.65 × 86,032.39
  4. Step 4: Simplify right side
    338,732.95x = 43,713,026,817.50
  5. Step 5: Solve for x
    x = 43,713,026,817.50/338,732.95
  6. Step 6: Final answer
    x = 129,048.64

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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.