Home / 255,276.50-382,676.88-86,681.55

Finding the Fourth Proportional to 255,276.50, 382,676.88 and 86,681.55

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Solution

The fourth proportional to 255,276.50, 382,676.88 and 86,681.55 is: 129,941.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,276.50 : 382,676.88 = 86,681.55 : x
  2. Step 2: Convert to fraction form
    255,276.50/382,676.88 = 86,681.55/x
  3. Step 3: Cross multiply
    255,276.50x = 382,676.88 × 86,681.55
  4. Step 4: Simplify right side
    255,276.50x = 33,171,025,107.56
  5. Step 5: Solve for x
    x = 33,171,025,107.56/255,276.50
  6. Step 6: Final answer
    x = 129,941.55

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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.