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Finding the Fourth Proportional to 306,663.35, 423,186 and 170,693.81

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Solution

The fourth proportional to 306,663.35, 423,186 and 170,693.81 is: 235,552.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,663.35 : 423,186 = 170,693.81 : x
  2. Step 2: Convert to fraction form
    306,663.35/423,186 = 170,693.81/x
  3. Step 3: Cross multiply
    306,663.35x = 423,186 × 170,693.81
  4. Step 4: Simplify right side
    306,663.35x = 72,235,230,678.66
  5. Step 5: Solve for x
    x = 72,235,230,678.66/306,663.35
  6. Step 6: Final answer
    x = 235,552.21

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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.