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Finding the Fourth Proportional to 255,818.57, 383,727.58 and 87,324.91

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Solution

The fourth proportional to 255,818.57, 383,727.58 and 87,324.91 is: 130,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,818.57 : 383,727.58 = 87,324.91 : x
  2. Step 2: Convert to fraction form
    255,818.57/383,727.58 = 87,324.91/x
  3. Step 3: Cross multiply
    255,818.57x = 383,727.58 × 87,324.91
  4. Step 4: Simplify right side
    255,818.57x = 33,508,975,210.39
  5. Step 5: Solve for x
    x = 33,508,975,210.39/255,818.57
  6. Step 6: Final answer
    x = 130,987.27

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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.