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Finding the Fourth Proportional to 308,523.92, 425,743.52 and 172,570.32

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Solution

The fourth proportional to 308,523.92, 425,743.52 and 172,570.32 is: 238,136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,523.92 : 425,743.52 = 172,570.32 : x
  2. Step 2: Convert to fraction form
    308,523.92/425,743.52 = 172,570.32/x
  3. Step 3: Cross multiply
    308,523.92x = 425,743.52 × 172,570.32
  4. Step 4: Simplify right side
    308,523.92x = 73,470,695,484.33
  5. Step 5: Solve for x
    x = 73,470,695,484.33/308,523.92
  6. Step 6: Final answer
    x = 238,136.14

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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.