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Finding the Fourth Proportional to 260,018.58, 390,042.46 and 73,015.50

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Solution

The fourth proportional to 260,018.58, 390,042.46 and 73,015.50 is: 109,527.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,018.58 : 390,042.46 = 73,015.50 : x
  2. Step 2: Convert to fraction form
    260,018.58/390,042.46 = 73,015.50/x
  3. Step 3: Cross multiply
    260,018.58x = 390,042.46 × 73,015.50
  4. Step 4: Simplify right side
    260,018.58x = 28,479,145,238.13
  5. Step 5: Solve for x
    x = 28,479,145,238.13/260,018.58
  6. Step 6: Final answer
    x = 109,527.35

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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.