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Finding the Fourth Proportional to 339,155.30, 508,732.95 and 319,801.70

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Solution

The fourth proportional to 339,155.30, 508,732.95 and 319,801.70 is: 479,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,155.30 : 508,732.95 = 319,801.70 : x
  2. Step 2: Convert to fraction form
    339,155.30/508,732.95 = 319,801.70/x
  3. Step 3: Cross multiply
    339,155.30x = 508,732.95 × 319,801.70
  4. Step 4: Simplify right side
    339,155.30x = 162,693,662,256.02
  5. Step 5: Solve for x
    x = 162,693,662,256.02/339,155.30
  6. Step 6: Final answer
    x = 479,702.55

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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.