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Finding the Fourth Proportional to 356,423.88, 491,802.44 and 203,392.20

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Solution

The fourth proportional to 356,423.88, 491,802.44 and 203,392.20 is: 280,645.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,423.88 : 491,802.44 = 203,392.20 : x
  2. Step 2: Convert to fraction form
    356,423.88/491,802.44 = 203,392.20/x
  3. Step 3: Cross multiply
    356,423.88x = 491,802.44 × 203,392.20
  4. Step 4: Simplify right side
    356,423.88x = 100,028,779,220.01
  5. Step 5: Solve for x
    x = 100,028,779,220.01/356,423.88
  6. Step 6: Final answer
    x = 280,645.56

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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.