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Finding the Fourth Proportional to 309,937.01, 427,719.39 and 173,980.76

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Solution

The fourth proportional to 309,937.01, 427,719.39 and 173,980.76 is: 240,096.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,937.01 : 427,719.39 = 173,980.76 : x
  2. Step 2: Convert to fraction form
    309,937.01/427,719.39 = 173,980.76/x
  3. Step 3: Cross multiply
    309,937.01x = 427,719.39 × 173,980.76
  4. Step 4: Simplify right side
    309,937.01x = 74,414,944,538.94
  5. Step 5: Solve for x
    x = 74,414,944,538.94/309,937.01
  6. Step 6: Final answer
    x = 240,096.99

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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.