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Finding the Fourth Proportional to 289,749.80, 433,587.90 and 264,866.60

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Solution

The fourth proportional to 289,749.80, 433,587.90 and 264,866.60 is: 396,352.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,749.80 : 433,587.90 = 264,866.60 : x
  2. Step 2: Convert to fraction form
    289,749.80/433,587.90 = 264,866.60/x
  3. Step 3: Cross multiply
    289,749.80x = 433,587.90 × 264,866.60
  4. Step 4: Simplify right side
    289,749.80x = 114,842,952,874.14
  5. Step 5: Solve for x
    x = 114,842,952,874.14/289,749.80
  6. Step 6: Final answer
    x = 396,352.14

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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.