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Finding the Fourth Proportional to 317,652.36, 438,360.63 and 188,616.60

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Solution

The fourth proportional to 317,652.36, 438,360.63 and 188,616.60 is: 260,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,652.36 : 438,360.63 = 188,616.60 : x
  2. Step 2: Convert to fraction form
    317,652.36/438,360.63 = 188,616.60/x
  3. Step 3: Cross multiply
    317,652.36x = 438,360.63 × 188,616.60
  4. Step 4: Simplify right side
    317,652.36x = 82,682,091,604.46
  5. Step 5: Solve for x
    x = 82,682,091,604.46/317,652.36
  6. Step 6: Final answer
    x = 260,291.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.