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Finding the Fourth Proportional to 358,910.49, 495,318.54 and 197,765.50

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Solution

The fourth proportional to 358,910.49, 495,318.54 and 197,765.50 is: 272,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,910.49 : 495,318.54 = 197,765.50 : x
  2. Step 2: Convert to fraction form
    358,910.49/495,318.54 = 197,765.50/x
  3. Step 3: Cross multiply
    358,910.49x = 495,318.54 × 197,765.50
  4. Step 4: Simplify right side
    358,910.49x = 97,956,919,154.42
  5. Step 5: Solve for x
    x = 97,956,919,154.42/358,910.49
  6. Step 6: Final answer
    x = 272,928.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.