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Finding the Fourth Proportional to 331,653.69, 457,683.62 and 188,421.59

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Solution

The fourth proportional to 331,653.69, 457,683.62 and 188,421.59 is: 260,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,653.69 : 457,683.62 = 188,421.59 : x
  2. Step 2: Convert to fraction form
    331,653.69/457,683.62 = 188,421.59/x
  3. Step 3: Cross multiply
    331,653.69x = 457,683.62 × 188,421.59
  4. Step 4: Simplify right side
    331,653.69x = 86,237,472,166.83
  5. Step 5: Solve for x
    x = 86,237,472,166.83/331,653.69
  6. Step 6: Final answer
    x = 260,022.65

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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.