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Finding the Fourth Proportional to 290,441.08, 435,284.97 and 130,398.85

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Solution

The fourth proportional to 290,441.08, 435,284.97 and 130,398.85 is: 195,429.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,441.08 : 435,284.97 = 130,398.85 : x
  2. Step 2: Convert to fraction form
    290,441.08/435,284.97 = 130,398.85/x
  3. Step 3: Cross multiply
    290,441.08x = 435,284.97 × 130,398.85
  4. Step 4: Simplify right side
    290,441.08x = 56,760,659,510.28
  5. Step 5: Solve for x
    x = 56,760,659,510.28/290,441.08
  6. Step 6: Final answer
    x = 195,429.17

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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.