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Finding the Fourth Proportional to 330,407.87, 455,990.72 and 185,211.32

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Solution

The fourth proportional to 330,407.87, 455,990.72 and 185,211.32 is: 255,607.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,407.87 : 455,990.72 = 185,211.32 : x
  2. Step 2: Convert to fraction form
    330,407.87/455,990.72 = 185,211.32/x
  3. Step 3: Cross multiply
    330,407.87x = 455,990.72 × 185,211.32
  4. Step 4: Simplify right side
    330,407.87x = 84,454,642,517.89
  5. Step 5: Solve for x
    x = 84,454,642,517.89/330,407.87
  6. Step 6: Final answer
    x = 255,607.24

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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.