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Finding the Fourth Proportional to 356,432.90, 491,858.59 and 203,465.01

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Solution

The fourth proportional to 356,432.90, 491,858.59 and 203,465.01 is: 280,770.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,432.90 : 491,858.59 = 203,465.01 : x
  2. Step 2: Convert to fraction form
    356,432.90/491,858.59 = 203,465.01/x
  3. Step 3: Cross multiply
    356,432.90x = 491,858.59 × 203,465.01
  4. Step 4: Simplify right side
    356,432.90x = 100,076,010,786.31
  5. Step 5: Solve for x
    x = 100,076,010,786.31/356,432.90
  6. Step 6: Final answer
    x = 280,770.97

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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.