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Finding the Fourth Proportional to 217,344.43, 299,659.70 and 155,329.03

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Solution

The fourth proportional to 217,344.43, 299,659.70 and 155,329.03 is: 214,157.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,344.43 : 299,659.70 = 155,329.03 : x
  2. Step 2: Convert to fraction form
    217,344.43/299,659.70 = 155,329.03/x
  3. Step 3: Cross multiply
    217,344.43x = 299,659.70 × 155,329.03
  4. Step 4: Simplify right side
    217,344.43x = 46,545,849,005.30
  5. Step 5: Solve for x
    x = 46,545,849,005.30/217,344.43
  6. Step 6: Final answer
    x = 214,157.08

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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.