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Finding the Fourth Proportional to 353,992.14, 530,978.49 and 87,746.76

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Solution

The fourth proportional to 353,992.14, 530,978.49 and 87,746.76 is: 131,617.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,992.14 : 530,978.49 = 87,746.76 : x
  2. Step 2: Convert to fraction form
    353,992.14/530,978.49 = 87,746.76/x
  3. Step 3: Cross multiply
    353,992.14x = 530,978.49 × 87,746.76
  4. Step 4: Simplify right side
    353,992.14x = 46,591,642,127.19
  5. Step 5: Solve for x
    x = 46,591,642,127.19/353,992.14
  6. Step 6: Final answer
    x = 131,617.73

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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.