Home / 330,474.06-456,053.09-187,261.40

Finding the Fourth Proportional to 330,474.06, 456,053.09 and 187,261.40

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Solution

The fourth proportional to 330,474.06, 456,053.09 and 187,261.40 is: 258,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,474.06 : 456,053.09 = 187,261.40 : x
  2. Step 2: Convert to fraction form
    330,474.06/456,053.09 = 187,261.40/x
  3. Step 3: Cross multiply
    330,474.06x = 456,053.09 × 187,261.40
  4. Step 4: Simplify right side
    330,474.06x = 85,401,140,311.55
  5. Step 5: Solve for x
    x = 85,401,140,311.55/330,474.06
  6. Step 6: Final answer
    x = 258,420.10

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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.