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Finding the Fourth Proportional to 308,466.09, 425,680.26 and 172,498.47

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Solution

The fourth proportional to 308,466.09, 425,680.26 and 172,498.47 is: 238,046.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,466.09 : 425,680.26 = 172,498.47 : x
  2. Step 2: Convert to fraction form
    308,466.09/425,680.26 = 172,498.47/x
  3. Step 3: Cross multiply
    308,466.09x = 425,680.26 × 172,498.47
  4. Step 4: Simplify right side
    308,466.09x = 73,429,193,559.20
  5. Step 5: Solve for x
    x = 73,429,193,559.20/308,466.09
  6. Step 6: Final answer
    x = 238,046.24

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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.