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Finding the Fourth Proportional to 358,949.81, 495,353.99 and 197,810.64

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Solution

The fourth proportional to 358,949.81, 495,353.99 and 197,810.64 is: 272,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,949.81 : 495,353.99 = 197,810.64 : x
  2. Step 2: Convert to fraction form
    358,949.81/495,353.99 = 197,810.64/x
  3. Step 3: Cross multiply
    358,949.81x = 495,353.99 × 197,810.64
  4. Step 4: Simplify right side
    358,949.81x = 97,986,290,282.98
  5. Step 5: Solve for x
    x = 97,986,290,282.98/358,949.81
  6. Step 6: Final answer
    x = 272,980.47

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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.