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Finding the Fourth Proportional to 319,527.99, 479,039.40 and 159,521.81

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Solution

The fourth proportional to 319,527.99, 479,039.40 and 159,521.81 is: 239,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,527.99 : 479,039.40 = 159,521.81 : x
  2. Step 2: Convert to fraction form
    319,527.99/479,039.40 = 159,521.81/x
  3. Step 3: Cross multiply
    319,527.99x = 479,039.40 × 159,521.81
  4. Step 4: Simplify right side
    319,527.99x = 76,417,229,754.12
  5. Step 5: Solve for x
    x = 76,417,229,754.12/319,527.99
  6. Step 6: Final answer
    x = 239,156.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.