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Finding the Fourth Proportional to 255,706.30, 383,598.86 and 87,187.21

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Solution

The fourth proportional to 255,706.30, 383,598.86 and 87,187.21 is: 130,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,706.30 : 383,598.86 = 87,187.21 : x
  2. Step 2: Convert to fraction form
    255,706.30/383,598.86 = 87,187.21/x
  3. Step 3: Cross multiply
    255,706.30x = 383,598.86 × 87,187.21
  4. Step 4: Simplify right side
    255,706.30x = 33,444,912,008.65
  5. Step 5: Solve for x
    x = 33,444,912,008.65/255,706.30
  6. Step 6: Final answer
    x = 130,794.25

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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.