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Finding the Fourth Proportional to 355,613.49, 490,522.23 and 248,144.31

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Solution

The fourth proportional to 355,613.49, 490,522.23 and 248,144.31 is: 342,282.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,613.49 : 490,522.23 = 248,144.31 : x
  2. Step 2: Convert to fraction form
    355,613.49/490,522.23 = 248,144.31/x
  3. Step 3: Cross multiply
    355,613.49x = 490,522.23 × 248,144.31
  4. Step 4: Simplify right side
    355,613.49x = 121,720,300,303.01
  5. Step 5: Solve for x
    x = 121,720,300,303.01/355,613.49
  6. Step 6: Final answer
    x = 342,282.57

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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.