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Finding the Fourth Proportional to 243,783.60, 335,464.92 and 215,556.72

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Solution

The fourth proportional to 243,783.60, 335,464.92 and 215,556.72 is: 296,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,783.60 : 335,464.92 = 215,556.72 : x
  2. Step 2: Convert to fraction form
    243,783.60/335,464.92 = 215,556.72/x
  3. Step 3: Cross multiply
    243,783.60x = 335,464.92 × 215,556.72
  4. Step 4: Simplify right side
    243,783.60x = 72,311,717,830.26
  5. Step 5: Solve for x
    x = 72,311,717,830.26/243,783.60
  6. Step 6: Final answer
    x = 296,622.57

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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.