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Finding the Fourth Proportional to 255,472.12, 383,254.68 and 86,983.84

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Solution

The fourth proportional to 255,472.12, 383,254.68 and 86,983.84 is: 130,491.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,472.12 : 383,254.68 = 86,983.84 : x
  2. Step 2: Convert to fraction form
    255,472.12/383,254.68 = 86,983.84/x
  3. Step 3: Cross multiply
    255,472.12x = 383,254.68 × 86,983.84
  4. Step 4: Simplify right side
    255,472.12x = 33,336,963,764.37
  5. Step 5: Solve for x
    x = 33,336,963,764.37/255,472.12
  6. Step 6: Final answer
    x = 130,491.59

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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.