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Finding the Fourth Proportional to 306,588.63, 423,112.19 and 170,622.16

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Solution

The fourth proportional to 306,588.63, 423,112.19 and 170,622.16 is: 235,469.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,588.63 : 423,112.19 = 170,622.16 : x
  2. Step 2: Convert to fraction form
    306,588.63/423,112.19 = 170,622.16/x
  3. Step 3: Cross multiply
    306,588.63x = 423,112.19 × 170,622.16
  4. Step 4: Simplify right side
    306,588.63x = 72,192,317,208.99
  5. Step 5: Solve for x
    x = 72,192,317,208.99/306,588.63
  6. Step 6: Final answer
    x = 235,469.65

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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.