Home / 257,340.52-386,090.16-115,305.40

Finding the Fourth Proportional to 257,340.52, 386,090.16 and 115,305.40

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Solution

The fourth proportional to 257,340.52, 386,090.16 and 115,305.40 is: 172,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,340.52 : 386,090.16 = 115,305.40 : x
  2. Step 2: Convert to fraction form
    257,340.52/386,090.16 = 115,305.40/x
  3. Step 3: Cross multiply
    257,340.52x = 386,090.16 × 115,305.40
  4. Step 4: Simplify right side
    257,340.52x = 44,518,280,334.86
  5. Step 5: Solve for x
    x = 44,518,280,334.86/257,340.52
  6. Step 6: Final answer
    x = 172,993.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.