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Finding the Fourth Proportional to 351,217.76, 526,829.70 and 84,978.52

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Solution

The fourth proportional to 351,217.76, 526,829.70 and 84,978.52 is: 127,468.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,217.76 : 526,829.70 = 84,978.52 : x
  2. Step 2: Convert to fraction form
    351,217.76/526,829.70 = 84,978.52/x
  3. Step 3: Cross multiply
    351,217.76x = 526,829.70 × 84,978.52
  4. Step 4: Simplify right side
    351,217.76x = 44,769,208,198.04
  5. Step 5: Solve for x
    x = 44,769,208,198.04/351,217.76
  6. Step 6: Final answer
    x = 127,468.52

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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.