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Finding the Fourth Proportional to 356,285.80, 491,682.36 and 203,320.93

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Solution

The fourth proportional to 356,285.80, 491,682.36 and 203,320.93 is: 280,587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,285.80 : 491,682.36 = 203,320.93 : x
  2. Step 2: Convert to fraction form
    356,285.80/491,682.36 = 203,320.93/x
  3. Step 3: Cross multiply
    356,285.80x = 491,682.36 × 203,320.93
  4. Step 4: Simplify right side
    356,285.80x = 99,969,314,699.79
  5. Step 5: Solve for x
    x = 99,969,314,699.79/356,285.80
  6. Step 6: Final answer
    x = 280,587.42

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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.