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Finding the Fourth Proportional to 215,994.40, 323,894.40 and 82,830.40

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Solution

The fourth proportional to 215,994.40, 323,894.40 and 82,830.40 is: 124,208.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,994.40 : 323,894.40 = 82,830.40 : x
  2. Step 2: Convert to fraction form
    215,994.40/323,894.40 = 82,830.40/x
  3. Step 3: Cross multiply
    215,994.40x = 323,894.40 × 82,830.40
  4. Step 4: Simplify right side
    215,994.40x = 26,828,302,709.76
  5. Step 5: Solve for x
    x = 26,828,302,709.76/215,994.40
  6. Step 6: Final answer
    x = 124,208.33

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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.