Home / 257,930.47-386,837.79-108,339.67

Finding the Fourth Proportional to 257,930.47, 386,837.79 and 108,339.67

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Solution

The fourth proportional to 257,930.47, 386,837.79 and 108,339.67 is: 162,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,930.47 : 386,837.79 = 108,339.67 : x
  2. Step 2: Convert to fraction form
    257,930.47/386,837.79 = 108,339.67/x
  3. Step 3: Cross multiply
    257,930.47x = 386,837.79 × 108,339.67
  4. Step 4: Simplify right side
    257,930.47x = 41,909,878,512.13
  5. Step 5: Solve for x
    x = 41,909,878,512.13/257,930.47
  6. Step 6: Final answer
    x = 162,485.18

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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.