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Finding the Fourth Proportional to 306,984.56, 423,632.31 and 171,018.32

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Solution

The fourth proportional to 306,984.56, 423,632.31 and 171,018.32 is: 236,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,984.56 : 423,632.31 = 171,018.32 : x
  2. Step 2: Convert to fraction form
    306,984.56/423,632.31 = 171,018.32/x
  3. Step 3: Cross multiply
    306,984.56x = 423,632.31 × 171,018.32
  4. Step 4: Simplify right side
    306,984.56x = 72,448,885,953.92
  5. Step 5: Solve for x
    x = 72,448,885,953.92/306,984.56
  6. Step 6: Final answer
    x = 236,001.73

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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.