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Finding the Fourth Proportional to 259,651.40, 389,477.10 and 162,305.60

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Solution

The fourth proportional to 259,651.40, 389,477.10 and 162,305.60 is: 243,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,651.40 : 389,477.10 = 162,305.60 : x
  2. Step 2: Convert to fraction form
    259,651.40/389,477.10 = 162,305.60/x
  3. Step 3: Cross multiply
    259,651.40x = 389,477.10 × 162,305.60
  4. Step 4: Simplify right side
    259,651.40x = 63,214,314,401.76
  5. Step 5: Solve for x
    x = 63,214,314,401.76/259,651.40
  6. Step 6: Final answer
    x = 243,458.40

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1.5x scale

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.