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Finding the Fourth Proportional to 309,554.76, 427,004.58 and 194,651.55

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Solution

The fourth proportional to 309,554.76, 427,004.58 and 194,651.55 is: 268,505.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,554.76 : 427,004.58 = 194,651.55 : x
  2. Step 2: Convert to fraction form
    309,554.76/427,004.58 = 194,651.55/x
  3. Step 3: Cross multiply
    309,554.76x = 427,004.58 × 194,651.55
  4. Step 4: Simplify right side
    309,554.76x = 83,117,103,354.10
  5. Step 5: Solve for x
    x = 83,117,103,354.10/309,554.76
  6. Step 6: Final answer
    x = 268,505.33

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1.5x scale

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.