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Finding the Fourth Proportional to 354,588.54, 491,402.34 and 347,859.90

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Solution

The fourth proportional to 354,588.54, 491,402.34 and 347,859.90 is: 482,077.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,588.54 : 491,402.34 = 347,859.90 : x
  2. Step 2: Convert to fraction form
    354,588.54/491,402.34 = 347,859.90/x
  3. Step 3: Cross multiply
    354,588.54x = 491,402.34 × 347,859.90
  4. Step 4: Simplify right side
    354,588.54x = 170,939,168,852.17
  5. Step 5: Solve for x
    x = 170,939,168,852.17/354,588.54
  6. Step 6: Final answer
    x = 482,077.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.