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Finding the Fourth Proportional to 239,898.89, 359,846.71 and 79,987.07

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Solution

The fourth proportional to 239,898.89, 359,846.71 and 79,987.07 is: 119,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,898.89 : 359,846.71 = 79,987.07 : x
  2. Step 2: Convert to fraction form
    239,898.89/359,846.71 = 79,987.07/x
  3. Step 3: Cross multiply
    239,898.89x = 359,846.71 × 79,987.07
  4. Step 4: Simplify right side
    239,898.89x = 28,783,083,982.04
  5. Step 5: Solve for x
    x = 28,783,083,982.04/239,898.89
  6. Step 6: Final answer
    x = 119,980.06

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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.