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Finding the Fourth Proportional to 456,843.57, 685,251.09 and 217,130.04

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Solution

The fourth proportional to 456,843.57, 685,251.09 and 217,130.04 is: 325,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,843.57 : 685,251.09 = 217,130.04 : x
  2. Step 2: Convert to fraction form
    456,843.57/685,251.09 = 217,130.04/x
  3. Step 3: Cross multiply
    456,843.57x = 685,251.09 × 217,130.04
  4. Step 4: Simplify right side
    456,843.57x = 148,788,596,581.74
  5. Step 5: Solve for x
    x = 148,788,596,581.74/456,843.57
  6. Step 6: Final answer
    x = 325,688.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.