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Finding the Fourth Proportional to 330,376.32, 455,904.72 and 187,133.49

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Solution

The fourth proportional to 330,376.32, 455,904.72 and 187,133.49 is: 258,235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,376.32 : 455,904.72 = 187,133.49 : x
  2. Step 2: Convert to fraction form
    330,376.32/455,904.72 = 187,133.49/x
  3. Step 3: Cross multiply
    330,376.32x = 455,904.72 × 187,133.49
  4. Step 4: Simplify right side
    330,376.32x = 85,315,041,361.07
  5. Step 5: Solve for x
    x = 85,315,041,361.07/330,376.32
  6. Step 6: Final answer
    x = 258,235.95

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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.