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Finding the Fourth Proportional to 465,678.88, 642,690.11 and 258,967.89

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Solution

The fourth proportional to 465,678.88, 642,690.11 and 258,967.89 is: 357,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,678.88 : 642,690.11 = 258,967.89 : x
  2. Step 2: Convert to fraction form
    465,678.88/642,690.11 = 258,967.89/x
  3. Step 3: Cross multiply
    465,678.88x = 642,690.11 × 258,967.89
  4. Step 4: Simplify right side
    465,678.88x = 166,436,102,357.99
  5. Step 5: Solve for x
    x = 166,436,102,357.99/465,678.88
  6. Step 6: Final answer
    x = 357,405.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.