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Finding the Fourth Proportional to 253,479.75, 349,802.37 and 157,986.38

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Solution

The fourth proportional to 253,479.75, 349,802.37 and 157,986.38 is: 218,021.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,479.75 : 349,802.37 = 157,986.38 : x
  2. Step 2: Convert to fraction form
    253,479.75/349,802.37 = 157,986.38/x
  3. Step 3: Cross multiply
    253,479.75x = 349,802.37 × 157,986.38
  4. Step 4: Simplify right side
    253,479.75x = 55,264,008,402.71
  5. Step 5: Solve for x
    x = 55,264,008,402.71/253,479.75
  6. Step 6: Final answer
    x = 218,021.39

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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.