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Finding the Fourth Proportional to 307,357.76, 424,183.95 and 186,489.56

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Solution

The fourth proportional to 307,357.76, 424,183.95 and 186,489.56 is: 257,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,357.76 : 424,183.95 = 186,489.56 : x
  2. Step 2: Convert to fraction form
    307,357.76/424,183.95 = 186,489.56/x
  3. Step 3: Cross multiply
    307,357.76x = 424,183.95 × 186,489.56
  4. Step 4: Simplify right side
    307,357.76x = 79,105,879,255.02
  5. Step 5: Solve for x
    x = 79,105,879,255.02/307,357.76
  6. Step 6: Final answer
    x = 257,373.94

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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.