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Finding the Fourth Proportional to 308,712.74, 425,888.34 and 181,330.88

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Solution

The fourth proportional to 308,712.74, 425,888.34 and 181,330.88 is: 250,157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,712.74 : 425,888.34 = 181,330.88 : x
  2. Step 2: Convert to fraction form
    308,712.74/425,888.34 = 181,330.88/x
  3. Step 3: Cross multiply
    308,712.74x = 425,888.34 × 181,330.88
  4. Step 4: Simplify right side
    308,712.74x = 77,226,707,473.94
  5. Step 5: Solve for x
    x = 77,226,707,473.94/308,712.74
  6. Step 6: Final answer
    x = 250,157.18

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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.