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Finding the Fourth Proportional to 309,450.01, 427,042.54 and 173,489.69

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Solution

The fourth proportional to 309,450.01, 427,042.54 and 173,489.69 is: 239,416.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,450.01 : 427,042.54 = 173,489.69 : x
  2. Step 2: Convert to fraction form
    309,450.01/427,042.54 = 173,489.69/x
  3. Step 3: Cross multiply
    309,450.01x = 427,042.54 × 173,489.69
  4. Step 4: Simplify right side
    309,450.01x = 74,087,475,746.20
  5. Step 5: Solve for x
    x = 74,087,475,746.20/309,450.01
  6. Step 6: Final answer
    x = 239,416.62

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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.