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Finding the Fourth Proportional to 298,916.90, 418,794.70 and 298,916.90

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Solution

The fourth proportional to 298,916.90, 418,794.70 and 298,916.90 is: 418,794.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,916.90 : 418,794.70 = 298,916.90 : x
  2. Step 2: Convert to fraction form
    298,916.90/418,794.70 = 298,916.90/x
  3. Step 3: Cross multiply
    298,916.90x = 418,794.70 × 298,916.90
  4. Step 4: Simplify right side
    298,916.90x = 125,184,813,460.43
  5. Step 5: Solve for x
    x = 125,184,813,460.43/298,916.90
  6. Step 6: Final answer
    x = 418,794.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.