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Finding the Fourth Proportional to 253,238.40, 349,608.96 and 168,480

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Solution

The fourth proportional to 253,238.40, 349,608.96 and 168,480 is: 232,595.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,238.40 : 349,608.96 = 168,480 : x
  2. Step 2: Convert to fraction form
    253,238.40/349,608.96 = 168,480/x
  3. Step 3: Cross multiply
    253,238.40x = 349,608.96 × 168,480
  4. Step 4: Simplify right side
    253,238.40x = 58,902,117,580.80
  5. Step 5: Solve for x
    x = 58,902,117,580.80/253,238.40
  6. Step 6: Final answer
    x = 232,595.52

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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.