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Finding the Fourth Proportional to 319,096.40, 478,644.60 and 194,680.40

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Solution

The fourth proportional to 319,096.40, 478,644.60 and 194,680.40 is: 292,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,096.40 : 478,644.60 = 194,680.40 : x
  2. Step 2: Convert to fraction form
    319,096.40/478,644.60 = 194,680.40/x
  3. Step 3: Cross multiply
    319,096.40x = 478,644.60 × 194,680.40
  4. Step 4: Simplify right side
    319,096.40x = 93,182,722,185.84
  5. Step 5: Solve for x
    x = 93,182,722,185.84/319,096.40
  6. Step 6: Final answer
    x = 292,020.60

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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.