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Finding the Fourth Proportional to 255,520.84, 383,304.93 and 86,984.53

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Solution

The fourth proportional to 255,520.84, 383,304.93 and 86,984.53 is: 130,484.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,520.84 : 383,304.93 = 86,984.53 : x
  2. Step 2: Convert to fraction form
    255,520.84/383,304.93 = 86,984.53/x
  3. Step 3: Cross multiply
    255,520.84x = 383,304.93 × 86,984.53
  4. Step 4: Simplify right side
    255,520.84x = 33,341,599,182.73
  5. Step 5: Solve for x
    x = 33,341,599,182.73/255,520.84
  6. Step 6: Final answer
    x = 130,484.85

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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.