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Finding the Fourth Proportional to 519,829.76, 717,367.20 and 281,365.76

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Solution

The fourth proportional to 519,829.76, 717,367.20 and 281,365.76 is: 388,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,829.76 : 717,367.20 = 281,365.76 : x
  2. Step 2: Convert to fraction form
    519,829.76/717,367.20 = 281,365.76/x
  3. Step 3: Cross multiply
    519,829.76x = 717,367.20 × 281,365.76
  4. Step 4: Simplify right side
    519,829.76x = 201,842,567,427.07
  5. Step 5: Solve for x
    x = 201,842,567,427.07/519,829.76
  6. Step 6: Final answer
    x = 388,285.90

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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.