Home / 458,168.76-686,976.84-205,403.46

Finding the Fourth Proportional to 458,168.76, 686,976.84 and 205,403.46

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Solution

The fourth proportional to 458,168.76, 686,976.84 and 205,403.46 is: 307,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,168.76 : 686,976.84 = 205,403.46 : x
  2. Step 2: Convert to fraction form
    458,168.76/686,976.84 = 205,403.46/x
  3. Step 3: Cross multiply
    458,168.76x = 686,976.84 × 205,403.46
  4. Step 4: Simplify right side
    458,168.76x = 141,107,419,875.87
  5. Step 5: Solve for x
    x = 141,107,419,875.87/458,168.76
  6. Step 6: Final answer
    x = 307,981.32

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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.