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Finding the Fourth Proportional to 325,148.80, 487,723.20 and 266,051.20

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Solution

The fourth proportional to 325,148.80, 487,723.20 and 266,051.20 is: 399,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,148.80 : 487,723.20 = 266,051.20 : x
  2. Step 2: Convert to fraction form
    325,148.80/487,723.20 = 266,051.20/x
  3. Step 3: Cross multiply
    325,148.80x = 487,723.20 × 266,051.20
  4. Step 4: Simplify right side
    325,148.80x = 129,759,342,627.84
  5. Step 5: Solve for x
    x = 129,759,342,627.84/325,148.80
  6. Step 6: Final answer
    x = 399,076.80

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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.