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Finding the Fourth Proportional to 339,323.61, 508,980.15 and 83,158.68

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Solution

The fourth proportional to 339,323.61, 508,980.15 and 83,158.68 is: 124,736.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,323.61 : 508,980.15 = 83,158.68 : x
  2. Step 2: Convert to fraction form
    339,323.61/508,980.15 = 83,158.68/x
  3. Step 3: Cross multiply
    339,323.61x = 508,980.15 × 83,158.68
  4. Step 4: Simplify right side
    339,323.61x = 42,326,117,420.20
  5. Step 5: Solve for x
    x = 42,326,117,420.20/339,323.61
  6. Step 6: Final answer
    x = 124,736.73

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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.