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Finding the Fourth Proportional to 228,340.70, 342,511.05 and 103,681.70

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Solution

The fourth proportional to 228,340.70, 342,511.05 and 103,681.70 is: 155,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,340.70 : 342,511.05 = 103,681.70 : x
  2. Step 2: Convert to fraction form
    228,340.70/342,511.05 = 103,681.70/x
  3. Step 3: Cross multiply
    228,340.70x = 342,511.05 × 103,681.70
  4. Step 4: Simplify right side
    228,340.70x = 35,512,127,932.79
  5. Step 5: Solve for x
    x = 35,512,127,932.79/228,340.70
  6. Step 6: Final answer
    x = 155,522.55

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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.