Home / 198,931.60-298,051.80-163,680.40

Finding the Fourth Proportional to 198,931.60, 298,051.80 and 163,680.40

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Solution

The fourth proportional to 198,931.60, 298,051.80 and 163,680.40 is: 245,236.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,931.60 : 298,051.80 = 163,680.40 : x
  2. Step 2: Convert to fraction form
    198,931.60/298,051.80 = 163,680.40/x
  3. Step 3: Cross multiply
    198,931.60x = 298,051.80 × 163,680.40
  4. Step 4: Simplify right side
    198,931.60x = 48,785,237,844.72
  5. Step 5: Solve for x
    x = 48,785,237,844.72/198,931.60
  6. Step 6: Final answer
    x = 245,236.24

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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.