Home / 198,669.76-298,200.48-145,931.20

Finding the Fourth Proportional to 198,669.76, 298,200.48 and 145,931.20

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Solution

The fourth proportional to 198,669.76, 298,200.48 and 145,931.20 is: 219,040.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,669.76 : 298,200.48 = 145,931.20 : x
  2. Step 2: Convert to fraction form
    198,669.76/298,200.48 = 145,931.20/x
  3. Step 3: Cross multiply
    198,669.76x = 298,200.48 × 145,931.20
  4. Step 4: Simplify right side
    198,669.76x = 43,516,753,886.98
  5. Step 5: Solve for x
    x = 43,516,753,886.98/198,669.76
  6. Step 6: Final answer
    x = 219,040.65

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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.