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Finding the Fourth Proportional to 201,435.30, 301,715.55 and 122,703.30

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Solution

The fourth proportional to 201,435.30, 301,715.55 and 122,703.30 is: 183,788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,435.30 : 301,715.55 = 122,703.30 : x
  2. Step 2: Convert to fraction form
    201,435.30/301,715.55 = 122,703.30/x
  3. Step 3: Cross multiply
    201,435.30x = 301,715.55 × 122,703.30
  4. Step 4: Simplify right side
    201,435.30x = 37,021,493,646.32
  5. Step 5: Solve for x
    x = 37,021,493,646.32/201,435.30
  6. Step 6: Final answer
    x = 183,788.51

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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.