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Finding the Fourth Proportional to 623,368.89, 860,249.25 and 355,096.89

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Solution

The fourth proportional to 623,368.89, 860,249.25 and 355,096.89 is: 490,033.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,368.89 : 860,249.25 = 355,096.89 : x
  2. Step 2: Convert to fraction form
    623,368.89/860,249.25 = 355,096.89/x
  3. Step 3: Cross multiply
    623,368.89x = 860,249.25 × 355,096.89
  4. Step 4: Simplify right side
    623,368.89x = 305,471,833,299.83
  5. Step 5: Solve for x
    x = 305,471,833,299.83/623,368.89
  6. Step 6: Final answer
    x = 490,033.81

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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.