Home / 312,784.32-431,630.79-169,541.28

Finding the Fourth Proportional to 312,784.32, 431,630.79 and 169,541.28

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Solution

The fourth proportional to 312,784.32, 431,630.79 and 169,541.28 is: 233,960.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,784.32 : 431,630.79 = 169,541.28 : x
  2. Step 2: Convert to fraction form
    312,784.32/431,630.79 = 169,541.28/x
  3. Step 3: Cross multiply
    312,784.32x = 431,630.79 × 169,541.28
  4. Step 4: Simplify right side
    312,784.32x = 73,179,236,624.01
  5. Step 5: Solve for x
    x = 73,179,236,624.01/312,784.32
  6. Step 6: Final answer
    x = 233,960.69

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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.