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Finding the Fourth Proportional to 290,785.60, 435,854.40 and 113,233.60

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Solution

The fourth proportional to 290,785.60, 435,854.40 and 113,233.60 is: 169,724.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,785.60 : 435,854.40 = 113,233.60 : x
  2. Step 2: Convert to fraction form
    290,785.60/435,854.40 = 113,233.60/x
  3. Step 3: Cross multiply
    290,785.60x = 435,854.40 × 113,233.60
  4. Step 4: Simplify right side
    290,785.60x = 49,353,362,787.84
  5. Step 5: Solve for x
    x = 49,353,362,787.84/290,785.60
  6. Step 6: Final answer
    x = 169,724.23

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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.