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Finding the Fourth Proportional to 198,488.40, 297,041.40 and 136,280.40

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Solution

The fourth proportional to 198,488.40, 297,041.40 and 136,280.40 is: 203,946.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,488.40 : 297,041.40 = 136,280.40 : x
  2. Step 2: Convert to fraction form
    198,488.40/297,041.40 = 136,280.40/x
  3. Step 3: Cross multiply
    198,488.40x = 297,041.40 × 136,280.40
  4. Step 4: Simplify right side
    198,488.40x = 40,480,920,808.56
  5. Step 5: Solve for x
    x = 40,480,920,808.56/198,488.40
  6. Step 6: Final answer
    x = 203,946.03

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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.