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Finding the Fourth Proportional to 361,379.53, 498,690.30 and 208,424.13

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Solution

The fourth proportional to 361,379.53, 498,690.30 and 208,424.13 is: 287,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,379.53 : 498,690.30 = 208,424.13 : x
  2. Step 2: Convert to fraction form
    361,379.53/498,690.30 = 208,424.13/x
  3. Step 3: Cross multiply
    361,379.53x = 498,690.30 × 208,424.13
  4. Step 4: Simplify right side
    361,379.53x = 103,939,091,916.94
  5. Step 5: Solve for x
    x = 103,939,091,916.94/361,379.53
  6. Step 6: Final answer
    x = 287,617.54

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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.