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Finding the Fourth Proportional to 298,936,812.40, 448,405,218.60 and 145,881,804.40

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Solution

The fourth proportional to 298,936,812.40, 448,405,218.60 and 145,881,804.40 is: 218,822,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,936,812.40 : 448,405,218.60 = 145,881,804.40 : x
  2. Step 2: Convert to fraction form
    298,936,812.40/448,405,218.60 = 145,881,804.40/x
  3. Step 3: Cross multiply
    298,936,812.40x = 448,405,218.60 × 145,881,804.40
  4. Step 4: Simplify right side
    298,936,812.40x = 65,414,162,391,744,448
  5. Step 5: Solve for x
    x = 65,414,162,391,744,448/298,936,812.40
  6. Step 6: Final answer
    x = 218,822,706.60

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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.