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Finding the Fourth Proportional to 228,394.48, 342,614.54 and 78,614.95

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Solution

The fourth proportional to 228,394.48, 342,614.54 and 78,614.95 is: 117,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,394.48 : 342,614.54 = 78,614.95 : x
  2. Step 2: Convert to fraction form
    228,394.48/342,614.54 = 78,614.95/x
  3. Step 3: Cross multiply
    228,394.48x = 342,614.54 × 78,614.95
  4. Step 4: Simplify right side
    228,394.48x = 26,934,624,931.37
  5. Step 5: Solve for x
    x = 26,934,624,931.37/228,394.48
  6. Step 6: Final answer
    x = 117,930.28

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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.