Home / 257,515.20-386,467.20-97,731.36

Finding the Fourth Proportional to 257,515.20, 386,467.20 and 97,731.36

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Solution

The fourth proportional to 257,515.20, 386,467.20 and 97,731.36 is: 146,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,515.20 : 386,467.20 = 97,731.36 : x
  2. Step 2: Convert to fraction form
    257,515.20/386,467.20 = 97,731.36/x
  3. Step 3: Cross multiply
    257,515.20x = 386,467.20 × 97,731.36
  4. Step 4: Simplify right side
    257,515.20x = 37,769,965,051.39
  5. Step 5: Solve for x
    x = 37,769,965,051.39/257,515.20
  6. Step 6: Final answer
    x = 146,670.82

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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.