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Finding the Fourth Proportional to 330,288.84, 455,783.34 and 187,049.90

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Solution

The fourth proportional to 330,288.84, 455,783.34 and 187,049.90 is: 258,120.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,288.84 : 455,783.34 = 187,049.90 : x
  2. Step 2: Convert to fraction form
    330,288.84/455,783.34 = 187,049.90/x
  3. Step 3: Cross multiply
    330,288.84x = 455,783.34 × 187,049.90
  4. Step 4: Simplify right side
    330,288.84x = 85,254,227,233.42
  5. Step 5: Solve for x
    x = 85,254,227,233.42/330,288.84
  6. Step 6: Final answer
    x = 258,120.22

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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.