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Finding the Fourth Proportional to 445,813.56, 615,222.63 and 254,831.06

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Solution

The fourth proportional to 445,813.56, 615,222.63 and 254,831.06 is: 351,666.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,813.56 : 615,222.63 = 254,831.06 : x
  2. Step 2: Convert to fraction form
    445,813.56/615,222.63 = 254,831.06/x
  3. Step 3: Cross multiply
    445,813.56x = 615,222.63 × 254,831.06
  4. Step 4: Simplify right side
    445,813.56x = 156,777,831,862.78
  5. Step 5: Solve for x
    x = 156,777,831,862.78/445,813.56
  6. Step 6: Final answer
    x = 351,666.81

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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.