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Finding the Fourth Proportional to 319,374.90, 479,062.41 and 129,938.34

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Solution

The fourth proportional to 319,374.90, 479,062.41 and 129,938.34 is: 194,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,374.90 : 479,062.41 = 129,938.34 : x
  2. Step 2: Convert to fraction form
    319,374.90/479,062.41 = 129,938.34/x
  3. Step 3: Cross multiply
    319,374.90x = 479,062.41 × 129,938.34
  4. Step 4: Simplify right side
    319,374.90x = 62,248,574,311.80
  5. Step 5: Solve for x
    x = 62,248,574,311.80/319,374.90
  6. Step 6: Final answer
    x = 194,907.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.