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Finding the Fourth Proportional to 290,690.98, 435,538.20 and 230,903.86

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Solution

The fourth proportional to 290,690.98, 435,538.20 and 230,903.86 is: 345,960.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,690.98 : 435,538.20 = 230,903.86 : x
  2. Step 2: Convert to fraction form
    290,690.98/435,538.20 = 230,903.86/x
  3. Step 3: Cross multiply
    290,690.98x = 435,538.20 × 230,903.86
  4. Step 4: Simplify right side
    290,690.98x = 100,567,451,557.45
  5. Step 5: Solve for x
    x = 100,567,451,557.45/290,690.98
  6. Step 6: Final answer
    x = 345,960.00

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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.