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Finding the Fourth Proportional to 228,389.47, 342,607.23 and 78,610.09

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Solution

The fourth proportional to 228,389.47, 342,607.23 and 78,610.09 is: 117,923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,389.47 : 342,607.23 = 78,610.09 : x
  2. Step 2: Convert to fraction form
    228,389.47/342,607.23 = 78,610.09/x
  3. Step 3: Cross multiply
    228,389.47x = 342,607.23 × 78,610.09
  4. Step 4: Simplify right side
    228,389.47x = 26,932,385,184.95
  5. Step 5: Solve for x
    x = 26,932,385,184.95/228,389.47
  6. Step 6: Final answer
    x = 117,923.06

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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.