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Finding the Fourth Proportional to 355,134.42, 490,085.47 and 191,790.91

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Solution

The fourth proportional to 355,134.42, 490,085.47 and 191,790.91 is: 264,671.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,134.42 : 490,085.47 = 191,790.91 : x
  2. Step 2: Convert to fraction form
    355,134.42/490,085.47 = 191,790.91/x
  3. Step 3: Cross multiply
    355,134.42x = 490,085.47 × 191,790.91
  4. Step 4: Simplify right side
    355,134.42x = 93,993,938,269.08
  5. Step 5: Solve for x
    x = 93,993,938,269.08/355,134.42
  6. Step 6: Final answer
    x = 264,671.44

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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.