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Finding the Fourth Proportional to 457,340.72, 685,644.75 and 217,334.17

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Solution

The fourth proportional to 457,340.72, 685,644.75 and 217,334.17 is: 325,827.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,340.72 : 685,644.75 = 217,334.17 : x
  2. Step 2: Convert to fraction form
    457,340.72/685,644.75 = 217,334.17/x
  3. Step 3: Cross multiply
    457,340.72x = 685,644.75 × 217,334.17
  4. Step 4: Simplify right side
    457,340.72x = 149,014,033,513.16
  5. Step 5: Solve for x
    x = 149,014,033,513.16/457,340.72
  6. Step 6: Final answer
    x = 325,827.18

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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.