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Finding the Fourth Proportional to 353,703.28, 488,034.84 and 210,435.34

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Solution

The fourth proportional to 353,703.28, 488,034.84 and 210,435.34 is: 290,355.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,703.28 : 488,034.84 = 210,435.34 : x
  2. Step 2: Convert to fraction form
    353,703.28/488,034.84 = 210,435.34/x
  3. Step 3: Cross multiply
    353,703.28x = 488,034.84 × 210,435.34
  4. Step 4: Simplify right side
    353,703.28x = 102,699,777,487.25
  5. Step 5: Solve for x
    x = 102,699,777,487.25/353,703.28
  6. Step 6: Final answer
    x = 290,355.74

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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.