Home / 398,688.18-597,930.37-118,139.82

Finding the Fourth Proportional to 398,688.18, 597,930.37 and 118,139.82

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Solution

The fourth proportional to 398,688.18, 597,930.37 and 118,139.82 is: 177,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,688.18 : 597,930.37 = 118,139.82 : x
  2. Step 2: Convert to fraction form
    398,688.18/597,930.37 = 118,139.82/x
  3. Step 3: Cross multiply
    398,688.18x = 597,930.37 × 118,139.82
  4. Step 4: Simplify right side
    398,688.18x = 70,639,386,284.33
  5. Step 5: Solve for x
    x = 70,639,386,284.33/398,688.18
  6. Step 6: Final answer
    x = 177,179.53

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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.