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Finding the Fourth Proportional to 305,278.82, 421,306.24 and 169,325.72

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Solution

The fourth proportional to 305,278.82, 421,306.24 and 169,325.72 is: 233,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,278.82 : 421,306.24 = 169,325.72 : x
  2. Step 2: Convert to fraction form
    305,278.82/421,306.24 = 169,325.72/x
  3. Step 3: Cross multiply
    305,278.82x = 421,306.24 × 169,325.72
  4. Step 4: Simplify right side
    305,278.82x = 71,337,982,428.49
  5. Step 5: Solve for x
    x = 71,337,982,428.49/305,278.82
  6. Step 6: Final answer
    x = 233,681.40

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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.