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Finding the Fourth Proportional to 215,745.83, 297,730.59 and 120,258.68

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Solution

The fourth proportional to 215,745.83, 297,730.59 and 120,258.68 is: 165,957.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,745.83 : 297,730.59 = 120,258.68 : x
  2. Step 2: Convert to fraction form
    215,745.83/297,730.59 = 120,258.68/x
  3. Step 3: Cross multiply
    215,745.83x = 297,730.59 × 120,258.68
  4. Step 4: Simplify right side
    215,745.83x = 35,804,685,809.40
  5. Step 5: Solve for x
    x = 35,804,685,809.40/215,745.83
  6. Step 6: Final answer
    x = 165,957.72

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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.