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Finding the Fourth Proportional to 290,548.96, 435,573.80 and 100,984.70

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Solution

The fourth proportional to 290,548.96, 435,573.80 and 100,984.70 is: 151,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,548.96 : 435,573.80 = 100,984.70 : x
  2. Step 2: Convert to fraction form
    290,548.96/435,573.80 = 100,984.70/x
  3. Step 3: Cross multiply
    290,548.96x = 435,573.80 × 100,984.70
  4. Step 4: Simplify right side
    290,548.96x = 43,986,289,520.86
  5. Step 5: Solve for x
    x = 43,986,289,520.86/290,548.96
  6. Step 6: Final answer
    x = 151,390.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.