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Finding the Fourth Proportional to 347,788.80, 520,516.80 and 305,798.40

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Solution

The fourth proportional to 347,788.80, 520,516.80 and 305,798.40 is: 457,672.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,788.80 : 520,516.80 = 305,798.40 : x
  2. Step 2: Convert to fraction form
    347,788.80/520,516.80 = 305,798.40/x
  3. Step 3: Cross multiply
    347,788.80x = 520,516.80 × 305,798.40
  4. Step 4: Simplify right side
    347,788.80x = 159,173,204,613.12
  5. Step 5: Solve for x
    x = 159,173,204,613.12/347,788.80
  6. Step 6: Final answer
    x = 457,672.03

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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.