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Finding the Fourth Proportional to 286,640.94, 429,960.06 and 73,408.44

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Solution

The fourth proportional to 286,640.94, 429,960.06 and 73,408.44 is: 110,112.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,640.94 : 429,960.06 = 73,408.44 : x
  2. Step 2: Convert to fraction form
    286,640.94/429,960.06 = 73,408.44/x
  3. Step 3: Cross multiply
    286,640.94x = 429,960.06 × 73,408.44
  4. Step 4: Simplify right side
    286,640.94x = 31,562,697,266.91
  5. Step 5: Solve for x
    x = 31,562,697,266.91/286,640.94
  6. Step 6: Final answer
    x = 110,112.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.