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Finding the Fourth Proportional to 356,291.15, 491,689.76 and 203,326.30

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Solution

The fourth proportional to 356,291.15, 491,689.76 and 203,326.30 is: 280,594.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,291.15 : 491,689.76 = 203,326.30 : x
  2. Step 2: Convert to fraction form
    356,291.15/491,689.76 = 203,326.30/x
  3. Step 3: Cross multiply
    356,291.15x = 491,689.76 × 203,326.30
  4. Step 4: Simplify right side
    356,291.15x = 99,973,457,190.24
  5. Step 5: Solve for x
    x = 99,973,457,190.24/356,291.15
  6. Step 6: Final answer
    x = 280,594.84

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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.