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Finding the Fourth Proportional to 353,850.40, 488,353.89 and 210,610.90

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Solution

The fourth proportional to 353,850.40, 488,353.89 and 210,610.90 is: 290,667.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,850.40 : 488,353.89 = 210,610.90 : x
  2. Step 2: Convert to fraction form
    353,850.40/488,353.89 = 210,610.90/x
  3. Step 3: Cross multiply
    353,850.40x = 488,353.89 × 210,610.90
  4. Step 4: Simplify right side
    353,850.40x = 102,852,652,291.40
  5. Step 5: Solve for x
    x = 102,852,652,291.40/353,850.40
  6. Step 6: Final answer
    x = 290,667.05

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1.5x scale

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.