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Finding the Fourth Proportional to 384,866.05, 531,141.15 and 223,720.60

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Solution

The fourth proportional to 384,866.05, 531,141.15 and 223,720.60 is: 308,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,866.05 : 531,141.15 = 223,720.60 : x
  2. Step 2: Convert to fraction form
    384,866.05/531,141.15 = 223,720.60/x
  3. Step 3: Cross multiply
    384,866.05x = 531,141.15 × 223,720.60
  4. Step 4: Simplify right side
    384,866.05x = 118,827,216,762.69
  5. Step 5: Solve for x
    x = 118,827,216,762.69/384,866.05
  6. Step 6: Final answer
    x = 308,749.54

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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.