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Finding the Fourth Proportional to 620,089.12, 930,231.15 and 265,105

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Solution

The fourth proportional to 620,089.12, 930,231.15 and 265,105 is: 397,699.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,089.12 : 930,231.15 = 265,105 : x
  2. Step 2: Convert to fraction form
    620,089.12/930,231.15 = 265,105/x
  3. Step 3: Cross multiply
    620,089.12x = 930,231.15 × 265,105
  4. Step 4: Simplify right side
    620,089.12x = 246,608,929,020.75
  5. Step 5: Solve for x
    x = 246,608,929,020.75/620,089.12
  6. Step 6: Final answer
    x = 397,699.17

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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.