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Finding the Fourth Proportional to 615,744.64, 923,671.36 and 172,513.92

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Solution

The fourth proportional to 615,744.64, 923,671.36 and 172,513.92 is: 258,786.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,744.64 : 923,671.36 = 172,513.92 : x
  2. Step 2: Convert to fraction form
    615,744.64/923,671.36 = 172,513.92/x
  3. Step 3: Cross multiply
    615,744.64x = 923,671.36 × 172,513.92
  4. Step 4: Simplify right side
    615,744.64x = 159,346,167,105.33
  5. Step 5: Solve for x
    x = 159,346,167,105.33/615,744.64
  6. Step 6: Final answer
    x = 258,786.12

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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.