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Finding the Fourth Proportional to 255,731.72, 383,486.42 and 73,322.35

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Solution

The fourth proportional to 255,731.72, 383,486.42 and 73,322.35 is: 109,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,731.72 : 383,486.42 = 73,322.35 : x
  2. Step 2: Convert to fraction form
    255,731.72/383,486.42 = 73,322.35/x
  3. Step 3: Cross multiply
    255,731.72x = 383,486.42 × 73,322.35
  4. Step 4: Simplify right side
    255,731.72x = 28,118,126,476.75
  5. Step 5: Solve for x
    x = 28,118,126,476.75/255,731.72
  6. Step 6: Final answer
    x = 109,951.66

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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.