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Finding the Fourth Proportional to 307,404.15, 424,153.56 and 186,609.03

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Solution

The fourth proportional to 307,404.15, 424,153.56 and 186,609.03 is: 257,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,404.15 : 424,153.56 = 186,609.03 : x
  2. Step 2: Convert to fraction form
    307,404.15/424,153.56 = 186,609.03/x
  3. Step 3: Cross multiply
    307,404.15x = 424,153.56 × 186,609.03
  4. Step 4: Simplify right side
    307,404.15x = 79,150,884,402.65
  5. Step 5: Solve for x
    x = 79,150,884,402.65/307,404.15
  6. Step 6: Final answer
    x = 257,481.51

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1.5x scale

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.