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Finding the Fourth Proportional to 312,349.44, 431,041.60 and 169,109.60

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Solution

The fourth proportional to 312,349.44, 431,041.60 and 169,109.60 is: 233,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,349.44 : 431,041.60 = 169,109.60 : x
  2. Step 2: Convert to fraction form
    312,349.44/431,041.60 = 169,109.60/x
  3. Step 3: Cross multiply
    312,349.44x = 431,041.60 × 169,109.60
  4. Step 4: Simplify right side
    312,349.44x = 72,893,272,559.36
  5. Step 5: Solve for x
    x = 72,893,272,559.36/312,349.44
  6. Step 6: Final answer
    x = 233,370.91

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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.