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Finding the Fourth Proportional to 356,368.51, 491,823.81 and 203,429.67

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Solution

The fourth proportional to 356,368.51, 491,823.81 and 203,429.67 is: 280,753.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,368.51 : 491,823.81 = 203,429.67 : x
  2. Step 2: Convert to fraction form
    356,368.51/491,823.81 = 203,429.67/x
  3. Step 3: Cross multiply
    356,368.51x = 491,823.81 × 203,429.67
  4. Step 4: Simplify right side
    356,368.51x = 100,051,555,366.44
  5. Step 5: Solve for x
    x = 100,051,555,366.44/356,368.51
  6. Step 6: Final answer
    x = 280,753.08

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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.