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Finding the Fourth Proportional to 339,407.80, 508,982.10 and 102,671.80

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Solution

The fourth proportional to 339,407.80, 508,982.10 and 102,671.80 is: 153,968.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,407.80 : 508,982.10 = 102,671.80 : x
  2. Step 2: Convert to fraction form
    339,407.80/508,982.10 = 102,671.80/x
  3. Step 3: Cross multiply
    339,407.80x = 508,982.10 × 102,671.80
  4. Step 4: Simplify right side
    339,407.80x = 52,258,108,374.78
  5. Step 5: Solve for x
    x = 52,258,108,374.78/339,407.80
  6. Step 6: Final answer
    x = 153,968.50

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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.