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Finding the Fourth Proportional to 290,004.92, 434,923.86 and 79,649.72

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Solution

The fourth proportional to 290,004.92, 434,923.86 and 79,649.72 is: 119,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,004.92 : 434,923.86 = 79,649.72 : x
  2. Step 2: Convert to fraction form
    290,004.92/434,923.86 = 79,649.72/x
  3. Step 3: Cross multiply
    290,004.92x = 434,923.86 × 79,649.72
  4. Step 4: Simplify right side
    290,004.92x = 34,641,563,670.32
  5. Step 5: Solve for x
    x = 34,641,563,670.32/290,004.92
  6. Step 6: Final answer
    x = 119,451.64

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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.