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Finding the Fourth Proportional to 215,477.76, 297,358.56 and 119,985.60

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Solution

The fourth proportional to 215,477.76, 297,358.56 and 119,985.60 is: 165,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,477.76 : 297,358.56 = 119,985.60 : x
  2. Step 2: Convert to fraction form
    215,477.76/297,358.56 = 119,985.60/x
  3. Step 3: Cross multiply
    215,477.76x = 297,358.56 × 119,985.60
  4. Step 4: Simplify right side
    215,477.76x = 35,678,745,236.74
  5. Step 5: Solve for x
    x = 35,678,745,236.74/215,477.76
  6. Step 6: Final answer
    x = 165,579.71

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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.