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Finding the Fourth Proportional to 355,439.26, 490,506.05 and 194,294.93

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Solution

The fourth proportional to 355,439.26, 490,506.05 and 194,294.93 is: 268,126.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,439.26 : 490,506.05 = 194,294.93 : x
  2. Step 2: Convert to fraction form
    355,439.26/490,506.05 = 194,294.93/x
  3. Step 3: Cross multiply
    355,439.26x = 490,506.05 × 194,294.93
  4. Step 4: Simplify right side
    355,439.26x = 95,302,836,809.93
  5. Step 5: Solve for x
    x = 95,302,836,809.93/355,439.26
  6. Step 6: Final answer
    x = 268,126.93

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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.