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Finding the Fourth Proportional to 307,358.76, 424,185.33 and 186,490.56

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Solution

The fourth proportional to 307,358.76, 424,185.33 and 186,490.56 is: 257,375.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,358.76 : 424,185.33 = 186,490.56 : x
  2. Step 2: Convert to fraction form
    307,358.76/424,185.33 = 186,490.56/x
  3. Step 3: Cross multiply
    307,358.76x = 424,185.33 × 186,490.56
  4. Step 4: Simplify right side
    307,358.76x = 79,106,559,735.48
  5. Step 5: Solve for x
    x = 79,106,559,735.48/307,358.76
  6. Step 6: Final answer
    x = 257,375.32

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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.