Home / 257,731.45-386,504.46-89,206

Finding the Fourth Proportional to 257,731.45, 386,504.46 and 89,206

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Solution

The fourth proportional to 257,731.45, 386,504.46 and 89,206 is: 133,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,731.45 : 386,504.46 = 89,206 : x
  2. Step 2: Convert to fraction form
    257,731.45/386,504.46 = 89,206/x
  3. Step 3: Cross multiply
    257,731.45x = 386,504.46 × 89,206
  4. Step 4: Simplify right side
    257,731.45x = 34,478,516,858.76
  5. Step 5: Solve for x
    x = 34,478,516,858.76/257,731.45
  6. Step 6: Final answer
    x = 133,776.91

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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.