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Finding the Fourth Proportional to 172,288.88, 258,433.32 and 53,969.45

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Solution

The fourth proportional to 172,288.88, 258,433.32 and 53,969.45 is: 80,954.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,288.88 : 258,433.32 = 53,969.45 : x
  2. Step 2: Convert to fraction form
    172,288.88/258,433.32 = 53,969.45/x
  3. Step 3: Cross multiply
    172,288.88x = 258,433.32 × 53,969.45
  4. Step 4: Simplify right side
    172,288.88x = 13,947,502,849.91
  5. Step 5: Solve for x
    x = 13,947,502,849.91/172,288.88
  6. Step 6: Final answer
    x = 80,954.17

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1.5x scale

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.