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Finding the Fourth Proportional to 262,257.60, 393,386.40 and 259,924.80

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Solution

The fourth proportional to 262,257.60, 393,386.40 and 259,924.80 is: 389,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,257.60 : 393,386.40 = 259,924.80 : x
  2. Step 2: Convert to fraction form
    262,257.60/393,386.40 = 259,924.80/x
  3. Step 3: Cross multiply
    262,257.60x = 393,386.40 × 259,924.80
  4. Step 4: Simplify right side
    262,257.60x = 102,250,881,342.72
  5. Step 5: Solve for x
    x = 102,250,881,342.72/262,257.60
  6. Step 6: Final answer
    x = 389,887.20

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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.