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Finding the Fourth Proportional to 298,393.79, 411,788.69 and 162,431.65

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Solution

The fourth proportional to 298,393.79, 411,788.69 and 162,431.65 is: 224,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,393.79 : 411,788.69 = 162,431.65 : x
  2. Step 2: Convert to fraction form
    298,393.79/411,788.69 = 162,431.65/x
  3. Step 3: Cross multiply
    298,393.79x = 411,788.69 × 162,431.65
  4. Step 4: Simplify right side
    298,393.79x = 66,887,515,744.65
  5. Step 5: Solve for x
    x = 66,887,515,744.65/298,393.79
  6. Step 6: Final answer
    x = 224,158.54

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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.