Home / 257,977.81-355,997.40-143,263.74

Finding the Fourth Proportional to 257,977.81, 355,997.40 and 143,263.74

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Solution

The fourth proportional to 257,977.81, 355,997.40 and 143,263.74 is: 197,697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,977.81 : 355,997.40 = 143,263.74 : x
  2. Step 2: Convert to fraction form
    257,977.81/355,997.40 = 143,263.74/x
  3. Step 3: Cross multiply
    257,977.81x = 355,997.40 × 143,263.74
  4. Step 4: Simplify right side
    257,977.81x = 51,001,518,958.33
  5. Step 5: Solve for x
    x = 51,001,518,958.33/257,977.81
  6. Step 6: Final answer
    x = 197,697.31

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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.