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Finding the Fourth Proportional to 328,160.78, 491,686.95 and 201,536.90

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Solution

The fourth proportional to 328,160.78, 491,686.95 and 201,536.90 is: 301,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,160.78 : 491,686.95 = 201,536.90 : x
  2. Step 2: Convert to fraction form
    328,160.78/491,686.95 = 201,536.90/x
  3. Step 3: Cross multiply
    328,160.78x = 491,686.95 × 201,536.90
  4. Step 4: Simplify right side
    328,160.78x = 99,093,063,673.46
  5. Step 5: Solve for x
    x = 99,093,063,673.46/328,160.78
  6. Step 6: Final answer
    x = 301,964.98

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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.