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Finding the Fourth Proportional to 331,875.20, 497,521.20 and 198,808.40

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Solution

The fourth proportional to 331,875.20, 497,521.20 and 198,808.40 is: 298,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,875.20 : 497,521.20 = 198,808.40 : x
  2. Step 2: Convert to fraction form
    331,875.20/497,521.20 = 198,808.40/x
  3. Step 3: Cross multiply
    331,875.20x = 497,521.20 × 198,808.40
  4. Step 4: Simplify right side
    331,875.20x = 98,911,393,738.08
  5. Step 5: Solve for x
    x = 98,911,393,738.08/331,875.20
  6. Step 6: Final answer
    x = 298,037.92

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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.