Home / 257,290.22-355,055.20-142,567.86

Finding the Fourth Proportional to 257,290.22, 355,055.20 and 142,567.86

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Solution

The fourth proportional to 257,290.22, 355,055.20 and 142,567.86 is: 196,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,290.22 : 355,055.20 = 142,567.86 : x
  2. Step 2: Convert to fraction form
    257,290.22/355,055.20 = 142,567.86/x
  3. Step 3: Cross multiply
    257,290.22x = 355,055.20 × 142,567.86
  4. Step 4: Simplify right side
    257,290.22x = 50,619,459,689.45
  5. Step 5: Solve for x
    x = 50,619,459,689.45/257,290.22
  6. Step 6: Final answer
    x = 196,740.71

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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.