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Finding the Fourth Proportional to 290,081.16, 435,121.14 and 163,664.01

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Solution

The fourth proportional to 290,081.16, 435,121.14 and 163,664.01 is: 245,495.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,081.16 : 435,121.14 = 163,664.01 : x
  2. Step 2: Convert to fraction form
    290,081.16/435,121.14 = 163,664.01/x
  3. Step 3: Cross multiply
    290,081.16x = 435,121.14 × 163,664.01
  4. Step 4: Simplify right side
    290,081.16x = 71,213,670,608.17
  5. Step 5: Solve for x
    x = 71,213,670,608.17/290,081.16
  6. Step 6: Final answer
    x = 245,495.68

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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.