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Finding the Fourth Proportional to 290,544.29, 435,566.80 and 100,980.03

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Solution

The fourth proportional to 290,544.29, 435,566.80 and 100,980.03 is: 151,383.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,544.29 : 435,566.80 = 100,980.03 : x
  2. Step 2: Convert to fraction form
    290,544.29/435,566.80 = 100,980.03/x
  3. Step 3: Cross multiply
    290,544.29x = 435,566.80 × 100,980.03
  4. Step 4: Simplify right side
    290,544.29x = 43,983,548,531.00
  5. Step 5: Solve for x
    x = 43,983,548,531.00/290,544.29
  6. Step 6: Final answer
    x = 151,383.28

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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.