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Finding the Fourth Proportional to 298,978,259.65, 448,696,290.49 and 135,330,939.52

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Solution

The fourth proportional to 298,978,259.65, 448,696,290.49 and 135,330,939.52 is: 203,100,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,978,259.65 : 448,696,290.49 = 135,330,939.52 : x
  2. Step 2: Convert to fraction form
    298,978,259.65/448,696,290.49 = 135,330,939.52/x
  3. Step 3: Cross multiply
    298,978,259.65x = 448,696,290.49 × 135,330,939.52
  4. Step 4: Simplify right side
    298,978,259.65x = 60,722,490,549,690,480
  5. Step 5: Solve for x
    x = 60,722,490,549,690,480/298,978,259.65
  6. Step 6: Final answer
    x = 203,100,020.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.