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Finding the Fourth Proportional to 419,987.62, 579,585.54 and 229,004.20

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Solution

The fourth proportional to 419,987.62, 579,585.54 and 229,004.20 is: 316,027.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,987.62 : 579,585.54 = 229,004.20 : x
  2. Step 2: Convert to fraction form
    419,987.62/579,585.54 = 229,004.20/x
  3. Step 3: Cross multiply
    419,987.62x = 579,585.54 × 229,004.20
  4. Step 4: Simplify right side
    419,987.62x = 132,727,522,919.27
  5. Step 5: Solve for x
    x = 132,727,522,919.27/419,987.62
  6. Step 6: Final answer
    x = 316,027.23

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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.