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Finding the Fourth Proportional to 358,986.94, 495,399.85 and 195,643.25

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Solution

The fourth proportional to 358,986.94, 495,399.85 and 195,643.25 is: 269,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,986.94 : 495,399.85 = 195,643.25 : x
  2. Step 2: Convert to fraction form
    358,986.94/495,399.85 = 195,643.25/x
  3. Step 3: Cross multiply
    358,986.94x = 495,399.85 × 195,643.25
  4. Step 4: Simplify right side
    358,986.94x = 96,921,635,595.15
  5. Step 5: Solve for x
    x = 96,921,635,595.15/358,986.94
  6. Step 6: Final answer
    x = 269,986.52

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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.