Home / 312,853.28-432,093.90-212,076.32

Finding the Fourth Proportional to 312,853.28, 432,093.90 and 212,076.32

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Solution

The fourth proportional to 312,853.28, 432,093.90 and 212,076.32 is: 292,906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,853.28 : 432,093.90 = 212,076.32 : x
  2. Step 2: Convert to fraction form
    312,853.28/432,093.90 = 212,076.32/x
  3. Step 3: Cross multiply
    312,853.28x = 432,093.90 × 212,076.32
  4. Step 4: Simplify right side
    312,853.28x = 91,636,884,206.45
  5. Step 5: Solve for x
    x = 91,636,884,206.45/312,853.28
  6. Step 6: Final answer
    x = 292,906.90

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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.