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Finding the Fourth Proportional to 625,364.61, 938,037.02 and 198,894.29

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Solution

The fourth proportional to 625,364.61, 938,037.02 and 198,894.29 is: 298,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,364.61 : 938,037.02 = 198,894.29 : x
  2. Step 2: Convert to fraction form
    625,364.61/938,037.02 = 198,894.29/x
  3. Step 3: Cross multiply
    625,364.61x = 938,037.02 × 198,894.29
  4. Step 4: Simplify right side
    625,364.61x = 186,570,201,401.96
  5. Step 5: Solve for x
    x = 186,570,201,401.96/625,364.61
  6. Step 6: Final answer
    x = 298,338.28

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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.