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Finding the Fourth Proportional to 298,461.60, 447,400.80 and 266,968.80

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Solution

The fourth proportional to 298,461.60, 447,400.80 and 266,968.80 is: 400,192.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,461.60 : 447,400.80 = 266,968.80 : x
  2. Step 2: Convert to fraction form
    298,461.60/447,400.80 = 266,968.80/x
  3. Step 3: Cross multiply
    298,461.60x = 447,400.80 × 266,968.80
  4. Step 4: Simplify right side
    298,461.60x = 119,442,054,695.04
  5. Step 5: Solve for x
    x = 119,442,054,695.04/298,461.60
  6. Step 6: Final answer
    x = 400,192.37

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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.