Home / 312,050,362.50-430,630,938.82-172,818,205.38

Finding the Fourth Proportional to 312,050,362.50, 430,630,938.82 and 172,818,205.38

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Solution

The fourth proportional to 312,050,362.50, 430,630,938.82 and 172,818,205.38 is: 238,489,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,050,362.50 : 430,630,938.82 = 172,818,205.38 : x
  2. Step 2: Convert to fraction form
    312,050,362.50/430,630,938.82 = 172,818,205.38/x
  3. Step 3: Cross multiply
    312,050,362.50x = 430,630,938.82 × 172,818,205.38
  4. Step 4: Simplify right side
    312,050,362.50x = 74,420,866,027,976,976
  5. Step 5: Solve for x
    x = 74,420,866,027,976,976/312,050,362.50
  6. Step 6: Final answer
    x = 238,489,920.13

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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.