Home / 431,430.30-647,145.45-282,131.10

Finding the Fourth Proportional to 431,430.30, 647,145.45 and 282,131.10

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Solution

The fourth proportional to 431,430.30, 647,145.45 and 282,131.10 is: 423,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,430.30 : 647,145.45 = 282,131.10 : x
  2. Step 2: Convert to fraction form
    431,430.30/647,145.45 = 282,131.10/x
  3. Step 3: Cross multiply
    431,430.30x = 647,145.45 × 282,131.10
  4. Step 4: Simplify right side
    431,430.30x = 182,579,857,668.50
  5. Step 5: Solve for x
    x = 182,579,857,668.50/431,430.30
  6. Step 6: Final answer
    x = 423,196.65

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Double scale
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Similar ratio
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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.