Home / 312,050,356.50-430,630,930.53-172,818,199.38

Finding the Fourth Proportional to 312,050,356.50, 430,630,930.53 and 172,818,199.38

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Solution

The fourth proportional to 312,050,356.50, 430,630,930.53 and 172,818,199.38 is: 238,489,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,050,356.50 : 430,630,930.53 = 172,818,199.38 : x
  2. Step 2: Convert to fraction form
    312,050,356.50/430,630,930.53 = 172,818,199.38/x
  3. Step 3: Cross multiply
    312,050,356.50x = 430,630,930.53 × 172,818,199.38
  4. Step 4: Simplify right side
    312,050,356.50x = 74,420,862,011,528,464
  5. Step 5: Solve for x
    x = 74,420,862,011,528,464/312,050,356.50
  6. Step 6: Final answer
    x = 238,489,911.84

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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.