Home / 421,406.31-581,542.64-230,419.55

Finding the Fourth Proportional to 421,406.31, 581,542.64 and 230,419.55

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Solution

The fourth proportional to 421,406.31, 581,542.64 and 230,419.55 is: 317,980.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,406.31 : 581,542.64 = 230,419.55 : x
  2. Step 2: Convert to fraction form
    421,406.31/581,542.64 = 230,419.55/x
  3. Step 3: Cross multiply
    421,406.31x = 581,542.64 × 230,419.55
  4. Step 4: Simplify right side
    421,406.31x = 133,998,794,580.44
  5. Step 5: Solve for x
    x = 133,998,794,580.44/421,406.31
  6. Step 6: Final answer
    x = 317,980.04

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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.