Home / 356,143.54-491,525.08-203,146.70

Finding the Fourth Proportional to 356,143.54, 491,525.08 and 203,146.70

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Solution

The fourth proportional to 356,143.54, 491,525.08 and 203,146.70 is: 280,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,143.54 : 491,525.08 = 203,146.70 : x
  2. Step 2: Convert to fraction form
    356,143.54/491,525.08 = 203,146.70/x
  3. Step 3: Cross multiply
    356,143.54x = 491,525.08 × 203,146.70
  4. Step 4: Simplify right side
    356,143.54x = 99,851,697,969.24
  5. Step 5: Solve for x
    x = 99,851,697,969.24/356,143.54
  6. Step 6: Final answer
    x = 280,369.25

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1.5x scale

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.