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Finding the Fourth Proportional to 253,395.95, 379,831.48 and 208,551.51

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Solution

The fourth proportional to 253,395.95, 379,831.48 and 208,551.51 is: 312,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,395.95 : 379,831.48 = 208,551.51 : x
  2. Step 2: Convert to fraction form
    253,395.95/379,831.48 = 208,551.51/x
  3. Step 3: Cross multiply
    253,395.95x = 379,831.48 × 208,551.51
  4. Step 4: Simplify right side
    253,395.95x = 79,214,428,178.16
  5. Step 5: Solve for x
    x = 79,214,428,178.16/253,395.95
  6. Step 6: Final answer
    x = 312,611.27

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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.