Home / 312,135,793.98-430,741,632.51-172,903,500.78

Finding the Fourth Proportional to 312,135,793.98, 430,741,632.51 and 172,903,500.78

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Solution

The fourth proportional to 312,135,793.98, 430,741,632.51 and 172,903,500.78 is: 238,603,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,135,793.98 : 430,741,632.51 = 172,903,500.78 : x
  2. Step 2: Convert to fraction form
    312,135,793.98/430,741,632.51 = 172,903,500.78/x
  3. Step 3: Cross multiply
    312,135,793.98x = 430,741,632.51 × 172,903,500.78
  4. Step 4: Simplify right side
    312,135,793.98x = 74,476,736,192,671,264
  5. Step 5: Solve for x
    x = 74,476,736,192,671,264/312,135,793.98
  6. Step 6: Final answer
    x = 238,603,638.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.