Home / 257,741.86-355,685.67-143,020.93

Finding the Fourth Proportional to 257,741.86, 355,685.67 and 143,020.93

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Solution

The fourth proportional to 257,741.86, 355,685.67 and 143,020.93 is: 197,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,741.86 : 355,685.67 = 143,020.93 : x
  2. Step 2: Convert to fraction form
    257,741.86/355,685.67 = 143,020.93/x
  3. Step 3: Cross multiply
    257,741.86x = 355,685.67 × 143,020.93
  4. Step 4: Simplify right side
    257,741.86x = 50,870,495,311.07
  5. Step 5: Solve for x
    x = 50,870,495,311.07/257,741.86
  6. Step 6: Final answer
    x = 197,369.94

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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.