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Finding the Fourth Proportional to 262,053.60, 393,080.40 and 259,720.80

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Solution

The fourth proportional to 262,053.60, 393,080.40 and 259,720.80 is: 389,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,053.60 : 393,080.40 = 259,720.80 : x
  2. Step 2: Convert to fraction form
    262,053.60/393,080.40 = 259,720.80/x
  3. Step 3: Cross multiply
    262,053.60x = 393,080.40 × 259,720.80
  4. Step 4: Simplify right side
    262,053.60x = 102,091,155,952.32
  5. Step 5: Solve for x
    x = 102,091,155,952.32/262,053.60
  6. Step 6: Final answer
    x = 389,581.20

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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.