Home / 218,726,652.80-328,089,979.20-215,325,430.40

Finding the Fourth Proportional to 218,726,652.80, 328,089,979.20 and 215,325,430.40

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Solution

The fourth proportional to 218,726,652.80, 328,089,979.20 and 215,325,430.40 is: 322,988,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,726,652.80 : 328,089,979.20 = 215,325,430.40 : x
  2. Step 2: Convert to fraction form
    218,726,652.80/328,089,979.20 = 215,325,430.40/x
  3. Step 3: Cross multiply
    218,726,652.80x = 328,089,979.20 × 215,325,430.40
  4. Step 4: Simplify right side
    218,726,652.80x = 70,646,115,981,167,048
  5. Step 5: Solve for x
    x = 70,646,115,981,167,048/218,726,652.80
  6. Step 6: Final answer
    x = 322,988,145.60

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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.