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Finding the Fourth Proportional to 353,748.99, 488,148.95 and 200,790.30

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Solution

The fourth proportional to 353,748.99, 488,148.95 and 200,790.30 is: 277,076.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,748.99 : 488,148.95 = 200,790.30 : x
  2. Step 2: Convert to fraction form
    353,748.99/488,148.95 = 200,790.30/x
  3. Step 3: Cross multiply
    353,748.99x = 488,148.95 × 200,790.30
  4. Step 4: Simplify right side
    353,748.99x = 98,015,573,111.23
  5. Step 5: Solve for x
    x = 98,015,573,111.23/353,748.99
  6. Step 6: Final answer
    x = 277,076.62

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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.