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Finding the Fourth Proportional to 260,043.09, 390,078 and 73,069.17

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Solution

The fourth proportional to 260,043.09, 390,078 and 73,069.17 is: 109,607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,043.09 : 390,078 = 73,069.17 : x
  2. Step 2: Convert to fraction form
    260,043.09/390,078 = 73,069.17/x
  3. Step 3: Cross multiply
    260,043.09x = 390,078 × 73,069.17
  4. Step 4: Simplify right side
    260,043.09x = 28,502,675,695.26
  5. Step 5: Solve for x
    x = 28,502,675,695.26/260,043.09
  6. Step 6: Final answer
    x = 109,607.51

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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.