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Finding the Fourth Proportional to 571,179.96, 788,238.48 and 313,039.80

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Solution

The fourth proportional to 571,179.96, 788,238.48 and 313,039.80 is: 432,000.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,179.96 : 788,238.48 = 313,039.80 : x
  2. Step 2: Convert to fraction form
    571,179.96/788,238.48 = 313,039.80/x
  3. Step 3: Cross multiply
    571,179.96x = 788,238.48 × 313,039.80
  4. Step 4: Simplify right side
    571,179.96x = 246,750,016,131.50
  5. Step 5: Solve for x
    x = 246,750,016,131.50/571,179.96
  6. Step 6: Final answer
    x = 432,000.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.