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Finding the Fourth Proportional to 371,172.78, 556,263.45 and 193,306.86

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Solution

The fourth proportional to 371,172.78, 556,263.45 and 193,306.86 is: 289,702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,172.78 : 556,263.45 = 193,306.86 : x
  2. Step 2: Convert to fraction form
    371,172.78/556,263.45 = 193,306.86/x
  3. Step 3: Cross multiply
    371,172.78x = 556,263.45 × 193,306.86
  4. Step 4: Simplify right side
    371,172.78x = 107,529,540,852.27
  5. Step 5: Solve for x
    x = 107,529,540,852.27/371,172.78
  6. Step 6: Final answer
    x = 289,702.12

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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.