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Finding the Fourth Proportional to 298,929.90, 418,812.90 and 298,929.90

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Solution

The fourth proportional to 298,929.90, 418,812.90 and 298,929.90 is: 418,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,929.90 : 418,812.90 = 298,929.90 : x
  2. Step 2: Convert to fraction form
    298,929.90/418,812.90 = 298,929.90/x
  3. Step 3: Cross multiply
    298,929.90x = 418,812.90 × 298,929.90
  4. Step 4: Simplify right side
    298,929.90x = 125,195,698,315.71
  5. Step 5: Solve for x
    x = 125,195,698,315.71/298,929.90
  6. Step 6: Final answer
    x = 418,812.90

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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.