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Finding the Fourth Proportional to 319,855.40, 479,564.40 and 151,456.40

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Solution

The fourth proportional to 319,855.40, 479,564.40 and 151,456.40 is: 227,081.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,855.40 : 479,564.40 = 151,456.40 : x
  2. Step 2: Convert to fraction form
    319,855.40/479,564.40 = 151,456.40/x
  3. Step 3: Cross multiply
    319,855.40x = 479,564.40 × 151,456.40
  4. Step 4: Simplify right side
    319,855.40x = 72,633,097,592.16
  5. Step 5: Solve for x
    x = 72,633,097,592.16/319,855.40
  6. Step 6: Final answer
    x = 227,081.04

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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.