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Finding the Fourth Proportional to 355,458.48, 490,531.59 and 194,313.60

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Solution

The fourth proportional to 355,458.48, 490,531.59 and 194,313.60 is: 268,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,458.48 : 490,531.59 = 194,313.60 : x
  2. Step 2: Convert to fraction form
    355,458.48/490,531.59 = 194,313.60/x
  3. Step 3: Cross multiply
    355,458.48x = 490,531.59 × 194,313.60
  4. Step 4: Simplify right side
    355,458.48x = 95,316,959,166.62
  5. Step 5: Solve for x
    x = 95,316,959,166.62/355,458.48
  6. Step 6: Final answer
    x = 268,152.16

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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.