Home / 257,631.40-355,458.64-166,991.16

Finding the Fourth Proportional to 257,631.40, 355,458.64 and 166,991.16

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Solution

The fourth proportional to 257,631.40, 355,458.64 and 166,991.16 is: 230,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,631.40 : 355,458.64 = 166,991.16 : x
  2. Step 2: Convert to fraction form
    257,631.40/355,458.64 = 166,991.16/x
  3. Step 3: Cross multiply
    257,631.40x = 355,458.64 × 166,991.16
  4. Step 4: Simplify right side
    257,631.40x = 59,358,450,625.62
  5. Step 5: Solve for x
    x = 59,358,450,625.62/257,631.40
  6. Step 6: Final answer
    x = 230,400.68

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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.