Home / 307,400.96-424,140.89-186,539.37

Finding the Fourth Proportional to 307,400.96, 424,140.89 and 186,539.37

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Solution

The fourth proportional to 307,400.96, 424,140.89 and 186,539.37 is: 257,380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,400.96 : 424,140.89 = 186,539.37 : x
  2. Step 2: Convert to fraction form
    307,400.96/424,140.89 = 186,539.37/x
  3. Step 3: Cross multiply
    307,400.96x = 424,140.89 × 186,539.37
  4. Step 4: Simplify right side
    307,400.96x = 79,118,973,479.14
  5. Step 5: Solve for x
    x = 79,118,973,479.14/307,400.96
  6. Step 6: Final answer
    x = 257,380.38

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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.