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Finding the Fourth Proportional to 328,391.61, 491,849.28 and 199,960.04

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Solution

The fourth proportional to 328,391.61, 491,849.28 and 199,960.04 is: 299,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,391.61 : 491,849.28 = 199,960.04 : x
  2. Step 2: Convert to fraction form
    328,391.61/491,849.28 = 199,960.04/x
  3. Step 3: Cross multiply
    328,391.61x = 491,849.28 × 199,960.04
  4. Step 4: Simplify right side
    328,391.61x = 98,350,201,702.77
  5. Step 5: Solve for x
    x = 98,350,201,702.77/328,391.61
  6. Step 6: Final answer
    x = 299,490.60

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1.5x scale

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.