Home / 290,836.40-436,276.20-103,823.60

Finding the Fourth Proportional to 290,836.40, 436,276.20 and 103,823.60

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Solution

The fourth proportional to 290,836.40, 436,276.20 and 103,823.60 is: 155,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,836.40 : 436,276.20 = 103,823.60 : x
  2. Step 2: Convert to fraction form
    290,836.40/436,276.20 = 103,823.60/x
  3. Step 3: Cross multiply
    290,836.40x = 436,276.20 × 103,823.60
  4. Step 4: Simplify right side
    290,836.40x = 45,295,765,678.32
  5. Step 5: Solve for x
    x = 45,295,765,678.32/290,836.40
  6. Step 6: Final answer
    x = 155,743.11

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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.