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Finding the Fourth Proportional to 304,864.56, 420,607.80 and 191,695.92

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Solution

The fourth proportional to 304,864.56, 420,607.80 and 191,695.92 is: 264,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,864.56 : 420,607.80 = 191,695.92 : x
  2. Step 2: Convert to fraction form
    304,864.56/420,607.80 = 191,695.92/x
  3. Step 3: Cross multiply
    304,864.56x = 420,607.80 × 191,695.92
  4. Step 4: Simplify right side
    304,864.56x = 80,628,799,180.18
  5. Step 5: Solve for x
    x = 80,628,799,180.18/304,864.56
  6. Step 6: Final answer
    x = 264,474.16

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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.