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Finding the Fourth Proportional to 290,865.60, 435,974.40 and 113,313.60

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Solution

The fourth proportional to 290,865.60, 435,974.40 and 113,313.60 is: 169,844.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,865.60 : 435,974.40 = 113,313.60 : x
  2. Step 2: Convert to fraction form
    290,865.60/435,974.40 = 113,313.60/x
  3. Step 3: Cross multiply
    290,865.60x = 435,974.40 × 113,313.60
  4. Step 4: Simplify right side
    290,865.60x = 49,401,828,771.84
  5. Step 5: Solve for x
    x = 49,401,828,771.84/290,865.60
  6. Step 6: Final answer
    x = 169,844.18

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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.