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Finding the Fourth Proportional to 339,153.30, 508,729.95 and 319,799.70

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Solution

The fourth proportional to 339,153.30, 508,729.95 and 319,799.70 is: 479,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,153.30 : 508,729.95 = 319,799.70 : x
  2. Step 2: Convert to fraction form
    339,153.30/508,729.95 = 319,799.70/x
  3. Step 3: Cross multiply
    339,153.30x = 508,729.95 × 319,799.70
  4. Step 4: Simplify right side
    339,153.30x = 162,691,685,391.02
  5. Step 5: Solve for x
    x = 162,691,685,391.02/339,153.30
  6. Step 6: Final answer
    x = 479,699.55

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1.5x scale

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.