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Finding the Fourth Proportional to 371,636.10, 512,842.59 and 201,866.58

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Solution

The fourth proportional to 371,636.10, 512,842.59 and 201,866.58 is: 278,567.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,636.10 : 512,842.59 = 201,866.58 : x
  2. Step 2: Convert to fraction form
    371,636.10/512,842.59 = 201,866.58/x
  3. Step 3: Cross multiply
    371,636.10x = 512,842.59 × 201,866.58
  4. Step 4: Simplify right side
    371,636.10x = 103,525,779,721.64
  5. Step 5: Solve for x
    x = 103,525,779,721.64/371,636.10
  6. Step 6: Final answer
    x = 278,567.61

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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.