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Finding the Fourth Proportional to 319,287.81, 478,389.75 and 192,661.98

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Solution

The fourth proportional to 319,287.81, 478,389.75 and 192,661.98 is: 288,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,287.81 : 478,389.75 = 192,661.98 : x
  2. Step 2: Convert to fraction form
    319,287.81/478,389.75 = 192,661.98/x
  3. Step 3: Cross multiply
    319,287.81x = 478,389.75 × 192,661.98
  4. Step 4: Simplify right side
    319,287.81x = 92,167,516,446.71
  5. Step 5: Solve for x
    x = 92,167,516,446.71/319,287.81
  6. Step 6: Final answer
    x = 288,665.94

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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.