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Finding the Fourth Proportional to 298,803.60, 448,205.40 and 262,645.20

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Solution

The fourth proportional to 298,803.60, 448,205.40 and 262,645.20 is: 393,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,803.60 : 448,205.40 = 262,645.20 : x
  2. Step 2: Convert to fraction form
    298,803.60/448,205.40 = 262,645.20/x
  3. Step 3: Cross multiply
    298,803.60x = 448,205.40 × 262,645.20
  4. Step 4: Simplify right side
    298,803.60x = 117,718,996,924.08
  5. Step 5: Solve for x
    x = 117,718,996,924.08/298,803.60
  6. Step 6: Final answer
    x = 393,967.80

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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.