Home / 257,564.24-386,401.08-80,066.96

Finding the Fourth Proportional to 257,564.24, 386,401.08 and 80,066.96

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Solution

The fourth proportional to 257,564.24, 386,401.08 and 80,066.96 is: 120,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,564.24 : 386,401.08 = 80,066.96 : x
  2. Step 2: Convert to fraction form
    257,564.24/386,401.08 = 80,066.96/x
  3. Step 3: Cross multiply
    257,564.24x = 386,401.08 × 80,066.96
  4. Step 4: Simplify right side
    257,564.24x = 30,937,959,816.32
  5. Step 5: Solve for x
    x = 30,937,959,816.32/257,564.24
  6. Step 6: Final answer
    x = 120,117.45

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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.