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Finding the Fourth Proportional to 305,005.10, 420,910.02 and 169,042.04

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Solution

The fourth proportional to 305,005.10, 420,910.02 and 169,042.04 is: 233,279.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,005.10 : 420,910.02 = 169,042.04 : x
  2. Step 2: Convert to fraction form
    305,005.10/420,910.02 = 169,042.04/x
  3. Step 3: Cross multiply
    305,005.10x = 420,910.02 × 169,042.04
  4. Step 4: Simplify right side
    305,005.10x = 71,151,487,911.10
  5. Step 5: Solve for x
    x = 71,151,487,911.10/305,005.10
  6. Step 6: Final answer
    x = 233,279.67

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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.