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Finding the Fourth Proportional to 625,364.98, 938,037.58 and 198,894.67

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Solution

The fourth proportional to 625,364.98, 938,037.58 and 198,894.67 is: 298,338.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,364.98 : 938,037.58 = 198,894.67 : x
  2. Step 2: Convert to fraction form
    625,364.98/938,037.58 = 198,894.67/x
  3. Step 3: Cross multiply
    625,364.98x = 938,037.58 × 198,894.67
  4. Step 4: Simplify right side
    625,364.98x = 186,570,672,079.37
  5. Step 5: Solve for x
    x = 186,570,672,079.37/625,364.98
  6. Step 6: Final answer
    x = 298,338.86

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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.