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Finding the Fourth Proportional to 215,430.72, 297,293.76 and 119,934.96

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Solution

The fourth proportional to 215,430.72, 297,293.76 and 119,934.96 is: 165,509.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,430.72 : 297,293.76 = 119,934.96 : x
  2. Step 2: Convert to fraction form
    215,430.72/297,293.76 = 119,934.96/x
  3. Step 3: Cross multiply
    215,430.72x = 297,293.76 × 119,934.96
  4. Step 4: Simplify right side
    215,430.72x = 35,655,915,213.85
  5. Step 5: Solve for x
    x = 35,655,915,213.85/215,430.72
  6. Step 6: Final answer
    x = 165,509.89

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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.