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Finding the Fourth Proportional to 355,443.84, 490,034.88 and 344,436.48

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Solution

The fourth proportional to 355,443.84, 490,034.88 and 344,436.48 is: 474,859.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,443.84 : 490,034.88 = 344,436.48 : x
  2. Step 2: Convert to fraction form
    355,443.84/490,034.88 = 344,436.48/x
  3. Step 3: Cross multiply
    355,443.84x = 490,034.88 × 344,436.48
  4. Step 4: Simplify right side
    355,443.84x = 168,785,889,144.42
  5. Step 5: Solve for x
    x = 168,785,889,144.42/355,443.84
  6. Step 6: Final answer
    x = 474,859.51

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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.