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Finding the Fourth Proportional to 445,814.05, 615,223.32 and 254,831.54

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Solution

The fourth proportional to 445,814.05, 615,223.32 and 254,831.54 is: 351,667.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,814.05 : 615,223.32 = 254,831.54 : x
  2. Step 2: Convert to fraction form
    445,814.05/615,223.32 = 254,831.54/x
  3. Step 3: Cross multiply
    445,814.05x = 615,223.32 × 254,831.54
  4. Step 4: Simplify right side
    445,814.05x = 156,778,306,079.51
  5. Step 5: Solve for x
    x = 156,778,306,079.51/445,814.05
  6. Step 6: Final answer
    x = 351,667.49

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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.