Home / 210,398,520.80-315,373,832.40-80,956,114.40

Finding the Fourth Proportional to 210,398,520.80, 315,373,832.40 and 80,956,114.40

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Solution

The fourth proportional to 210,398,520.80, 315,373,832.40 and 80,956,114.40 is: 121,348,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,398,520.80 : 315,373,832.40 = 80,956,114.40 : x
  2. Step 2: Convert to fraction form
    210,398,520.80/315,373,832.40 = 80,956,114.40/x
  3. Step 3: Cross multiply
    210,398,520.80x = 315,373,832.40 × 80,956,114.40
  4. Step 4: Simplify right side
    210,398,520.80x = 25,531,440,054,540,828
  5. Step 5: Solve for x
    x = 25,531,440,054,540,828/210,398,520.80
  6. Step 6: Final answer
    x = 121,348,001.68

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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.