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Finding the Fourth Proportional to 256,252.32, 384,111 and 87,723

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Solution

The fourth proportional to 256,252.32, 384,111 and 87,723 is: 131,492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,252.32 : 384,111 = 87,723 : x
  2. Step 2: Convert to fraction form
    256,252.32/384,111 = 87,723/x
  3. Step 3: Cross multiply
    256,252.32x = 384,111 × 87,723
  4. Step 4: Simplify right side
    256,252.32x = 33,695,369,253
  5. Step 5: Solve for x
    x = 33,695,369,253/256,252.32
  6. Step 6: Final answer
    x = 131,492.93

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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.