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Finding the Fourth Proportional to 262,249.60, 393,374.40 and 257,000.80

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Solution

The fourth proportional to 262,249.60, 393,374.40 and 257,000.80 is: 385,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,249.60 : 393,374.40 = 257,000.80 : x
  2. Step 2: Convert to fraction form
    262,249.60/393,374.40 = 257,000.80/x
  3. Step 3: Cross multiply
    262,249.60x = 393,374.40 × 257,000.80
  4. Step 4: Simplify right side
    262,249.60x = 101,097,535,499.52
  5. Step 5: Solve for x
    x = 101,097,535,499.52/262,249.60
  6. Step 6: Final answer
    x = 385,501.20

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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.