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Finding the Fourth Proportional to 612,147.92, 917,716.40 and 270,347.92

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Solution

The fourth proportional to 612,147.92, 917,716.40 and 270,347.92 is: 405,298.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,147.92 : 917,716.40 = 270,347.92 : x
  2. Step 2: Convert to fraction form
    612,147.92/917,716.40 = 270,347.92/x
  3. Step 3: Cross multiply
    612,147.92x = 917,716.40 × 270,347.92
  4. Step 4: Simplify right side
    612,147.92x = 248,102,719,889.89
  5. Step 5: Solve for x
    x = 248,102,719,889.89/612,147.92
  6. Step 6: Final answer
    x = 405,298.64

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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.