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Finding the Fourth Proportional to 312,218.52, 430,858.44 and 168,975.60

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Solution

The fourth proportional to 312,218.52, 430,858.44 and 168,975.60 is: 233,184.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,218.52 : 430,858.44 = 168,975.60 : x
  2. Step 2: Convert to fraction form
    312,218.52/430,858.44 = 168,975.60/x
  3. Step 3: Cross multiply
    312,218.52x = 430,858.44 × 168,975.60
  4. Step 4: Simplify right side
    312,218.52x = 72,804,563,414.06
  5. Step 5: Solve for x
    x = 72,804,563,414.06/312,218.52
  6. Step 6: Final answer
    x = 233,184.64

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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.