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Finding the Fourth Proportional to 315,435.41, 435,300.68 and 172,195.42

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Solution

The fourth proportional to 315,435.41, 435,300.68 and 172,195.42 is: 237,629.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,435.41 : 435,300.68 = 172,195.42 : x
  2. Step 2: Convert to fraction form
    315,435.41/435,300.68 = 172,195.42/x
  3. Step 3: Cross multiply
    315,435.41x = 435,300.68 × 172,195.42
  4. Step 4: Simplify right side
    315,435.41x = 74,956,783,577.31
  5. Step 5: Solve for x
    x = 74,956,783,577.31/315,435.41
  6. Step 6: Final answer
    x = 237,629.58

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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.