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Finding the Fourth Proportional to 201,018, 301,665.24 and 69,690

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Solution

The fourth proportional to 201,018, 301,665.24 and 69,690 is: 104,582.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,018 : 301,665.24 = 69,690 : x
  2. Step 2: Convert to fraction form
    201,018/301,665.24 = 69,690/x
  3. Step 3: Cross multiply
    201,018x = 301,665.24 × 69,690
  4. Step 4: Simplify right side
    201,018x = 21,023,050,575.60
  5. Step 5: Solve for x
    x = 21,023,050,575.60/201,018
  6. Step 6: Final answer
    x = 104,582.93

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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.