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Finding the Fourth Proportional to 486,148.26, 670,884.64 and 268,357

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Solution

The fourth proportional to 486,148.26, 670,884.64 and 268,357 is: 370,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,148.26 : 670,884.64 = 268,357 : x
  2. Step 2: Convert to fraction form
    486,148.26/670,884.64 = 268,357/x
  3. Step 3: Cross multiply
    486,148.26x = 670,884.64 × 268,357
  4. Step 4: Simplify right side
    486,148.26x = 180,036,589,336.48
  5. Step 5: Solve for x
    x = 180,036,589,336.48/486,148.26
  6. Step 6: Final answer
    x = 370,332.68

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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.