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Finding the Fourth Proportional to 339,322.47, 508,983.24 and 86,602.96

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Solution

The fourth proportional to 339,322.47, 508,983.24 and 86,602.96 is: 129,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,322.47 : 508,983.24 = 86,602.96 : x
  2. Step 2: Convert to fraction form
    339,322.47/508,983.24 = 86,602.96/x
  3. Step 3: Cross multiply
    339,322.47x = 508,983.24 × 86,602.96
  4. Step 4: Simplify right side
    339,322.47x = 44,079,455,419.62
  5. Step 5: Solve for x
    x = 44,079,455,419.62/339,322.47
  6. Step 6: Final answer
    x = 129,904.32

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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.