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Finding the Fourth Proportional to 259,551.84, 389,328.12 and 72,563.16

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Solution

The fourth proportional to 259,551.84, 389,328.12 and 72,563.16 is: 108,844.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,551.84 : 389,328.12 = 72,563.16 : x
  2. Step 2: Convert to fraction form
    259,551.84/389,328.12 = 72,563.16/x
  3. Step 3: Cross multiply
    259,551.84x = 389,328.12 × 72,563.16
  4. Step 4: Simplify right side
    259,551.84x = 28,250,878,664.06
  5. Step 5: Solve for x
    x = 28,250,878,664.06/259,551.84
  6. Step 6: Final answer
    x = 108,844.84

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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.