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Finding the Fourth Proportional to 479,289.19, 661,421.22 and 264,435.58

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Solution

The fourth proportional to 479,289.19, 661,421.22 and 264,435.58 is: 364,922.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,289.19 : 661,421.22 = 264,435.58 : x
  2. Step 2: Convert to fraction form
    479,289.19/661,421.22 = 264,435.58/x
  3. Step 3: Cross multiply
    479,289.19x = 661,421.22 × 264,435.58
  4. Step 4: Simplify right side
    479,289.19x = 174,903,301,289.82
  5. Step 5: Solve for x
    x = 174,903,301,289.82/479,289.19
  6. Step 6: Final answer
    x = 364,922.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.