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Finding the Fourth Proportional to 355,591.10, 490,675.44 and 210,401.30

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Solution

The fourth proportional to 355,591.10, 490,675.44 and 210,401.30 is: 290,329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,591.10 : 490,675.44 = 210,401.30 : x
  2. Step 2: Convert to fraction form
    355,591.10/490,675.44 = 210,401.30/x
  3. Step 3: Cross multiply
    355,591.10x = 490,675.44 × 210,401.30
  4. Step 4: Simplify right side
    355,591.10x = 103,238,750,454.07
  5. Step 5: Solve for x
    x = 103,238,750,454.07/355,591.10
  6. Step 6: Final answer
    x = 290,329.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.