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Finding the Fourth Proportional to 353,850.90, 488,354.58 and 210,611.40

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Solution

The fourth proportional to 353,850.90, 488,354.58 and 210,611.40 is: 290,667.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,850.90 : 488,354.58 = 210,611.40 : x
  2. Step 2: Convert to fraction form
    353,850.90/488,354.58 = 210,611.40/x
  3. Step 3: Cross multiply
    353,850.90x = 488,354.58 × 210,611.40
  4. Step 4: Simplify right side
    353,850.90x = 102,853,041,790.21
  5. Step 5: Solve for x
    x = 102,853,041,790.21/353,850.90
  6. Step 6: Final answer
    x = 290,667.74

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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.