Home / 312,050,360.50-430,630,936.05-172,818,203.38

Finding the Fourth Proportional to 312,050,360.50, 430,630,936.05 and 172,818,203.38

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Solution

The fourth proportional to 312,050,360.50, 430,630,936.05 and 172,818,203.38 is: 238,489,917.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,050,360.50 : 430,630,936.05 = 172,818,203.38 : x
  2. Step 2: Convert to fraction form
    312,050,360.50/430,630,936.05 = 172,818,203.38/x
  3. Step 3: Cross multiply
    312,050,360.50x = 430,630,936.05 × 172,818,203.38
  4. Step 4: Simplify right side
    312,050,360.50x = 74,420,864,688,008,672
  5. Step 5: Solve for x
    x = 74,420,864,688,008,672/312,050,360.50
  6. Step 6: Final answer
    x = 238,489,917.36

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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.