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Finding the Fourth Proportional to 290,844.63, 436,031.61 and 130,803.36

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Solution

The fourth proportional to 290,844.63, 436,031.61 and 130,803.36 is: 196,099.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,844.63 : 436,031.61 = 130,803.36 : x
  2. Step 2: Convert to fraction form
    290,844.63/436,031.61 = 130,803.36/x
  3. Step 3: Cross multiply
    290,844.63x = 436,031.61 × 130,803.36
  4. Step 4: Simplify right side
    290,844.63x = 57,034,397,528.58
  5. Step 5: Solve for x
    x = 57,034,397,528.58/290,844.63
  6. Step 6: Final answer
    x = 196,099.19

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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.