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Finding the Fourth Proportional to 312,215.48, 430,858.62 and 168,975.48

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Solution

The fourth proportional to 312,215.48, 430,858.62 and 168,975.48 is: 233,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,215.48 : 430,858.62 = 168,975.48 : x
  2. Step 2: Convert to fraction form
    312,215.48/430,858.62 = 168,975.48/x
  3. Step 3: Cross multiply
    312,215.48x = 430,858.62 × 168,975.48
  4. Step 4: Simplify right side
    312,215.48x = 72,804,542,126.64
  5. Step 5: Solve for x
    x = 72,804,542,126.64/312,215.48
  6. Step 6: Final answer
    x = 233,186.85

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1.5x scale

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.