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Finding the Fourth Proportional to 171,572.10, 257,382.99 and 53,253

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Solution

The fourth proportional to 171,572.10, 257,382.99 and 53,253 is: 79,887.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,572.10 : 257,382.99 = 53,253 : x
  2. Step 2: Convert to fraction form
    171,572.10/257,382.99 = 53,253/x
  3. Step 3: Cross multiply
    171,572.10x = 257,382.99 × 53,253
  4. Step 4: Simplify right side
    171,572.10x = 13,706,416,366.47
  5. Step 5: Solve for x
    x = 13,706,416,366.47/171,572.10
  6. Step 6: Final answer
    x = 79,887.21

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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.