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Finding the Fourth Proportional to 255,714.20, 383,611.80 and 87,250.40

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Solution

The fourth proportional to 255,714.20, 383,611.80 and 87,250.40 is: 130,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,714.20 : 383,611.80 = 87,250.40 : x
  2. Step 2: Convert to fraction form
    255,714.20/383,611.80 = 87,250.40/x
  3. Step 3: Cross multiply
    255,714.20x = 383,611.80 × 87,250.40
  4. Step 4: Simplify right side
    255,714.20x = 33,470,282,994.72
  5. Step 5: Solve for x
    x = 33,470,282,994.72/255,714.20
  6. Step 6: Final answer
    x = 130,889.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.