Home / 243,543,890.78-365,315,829.11-112,347,349.43

Finding the Fourth Proportional to 243,543,890.78, 365,315,829.11 and 112,347,349.43

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Solution

The fourth proportional to 243,543,890.78, 365,315,829.11 and 112,347,349.43 is: 168,521,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,543,890.78 : 365,315,829.11 = 112,347,349.43 : x
  2. Step 2: Convert to fraction form
    243,543,890.78/365,315,829.11 = 112,347,349.43/x
  3. Step 3: Cross multiply
    243,543,890.78x = 365,315,829.11 × 112,347,349.43
  4. Step 4: Simplify right side
    243,543,890.78x = 41,042,265,102,943,024
  5. Step 5: Solve for x
    x = 41,042,265,102,943,024/243,543,890.78
  6. Step 6: Final answer
    x = 168,521,020.88

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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.