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Finding the Fourth Proportional to 265,346.40, 397,328.40 and 252,904.80

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Solution

The fourth proportional to 265,346.40, 397,328.40 and 252,904.80 is: 378,698.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,346.40 : 397,328.40 = 252,904.80 : x
  2. Step 2: Convert to fraction form
    265,346.40/397,328.40 = 252,904.80/x
  3. Step 3: Cross multiply
    265,346.40x = 397,328.40 × 252,904.80
  4. Step 4: Simplify right side
    265,346.40x = 100,486,259,536.32
  5. Step 5: Solve for x
    x = 100,486,259,536.32/265,346.40
  6. Step 6: Final answer
    x = 378,698.41

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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.