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Finding the Fourth Proportional to 304,638.56, 420,401.16 and 170,502.56

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Solution

The fourth proportional to 304,638.56, 420,401.16 and 170,502.56 is: 235,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,638.56 : 420,401.16 = 170,502.56 : x
  2. Step 2: Convert to fraction form
    304,638.56/420,401.16 = 170,502.56/x
  3. Step 3: Cross multiply
    304,638.56x = 420,401.16 × 170,502.56
  4. Step 4: Simplify right side
    304,638.56x = 71,679,474,006.97
  5. Step 5: Solve for x
    x = 71,679,474,006.97/304,638.56
  6. Step 6: Final answer
    x = 235,293.50

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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.