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Finding the Fourth Proportional to 255,785.77, 383,713.68 and 87,260.85

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Solution

The fourth proportional to 255,785.77, 383,713.68 and 87,260.85 is: 130,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,785.77 : 383,713.68 = 87,260.85 : x
  2. Step 2: Convert to fraction form
    255,785.77/383,713.68 = 87,260.85/x
  3. Step 3: Cross multiply
    255,785.77x = 383,713.68 × 87,260.85
  4. Step 4: Simplify right side
    255,785.77x = 33,483,182,252.46
  5. Step 5: Solve for x
    x = 33,483,182,252.46/255,785.77
  6. Step 6: Final answer
    x = 130,903.22

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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.