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Finding the Fourth Proportional to 306,986.72, 423,672 and 179,654.72

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Solution

The fourth proportional to 306,986.72, 423,672 and 179,654.72 is: 247,941.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,986.72 : 423,672 = 179,654.72 : x
  2. Step 2: Convert to fraction form
    306,986.72/423,672 = 179,654.72/x
  3. Step 3: Cross multiply
    306,986.72x = 423,672 × 179,654.72
  4. Step 4: Simplify right side
    306,986.72x = 76,114,674,531.84
  5. Step 5: Solve for x
    x = 76,114,674,531.84/306,986.72
  6. Step 6: Final answer
    x = 247,941.26

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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.