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Finding the Fourth Proportional to 255,433.47, 352,455.96 and 154,831.47

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Solution

The fourth proportional to 255,433.47, 352,455.96 and 154,831.47 is: 213,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,433.47 : 352,455.96 = 154,831.47 : x
  2. Step 2: Convert to fraction form
    255,433.47/352,455.96 = 154,831.47/x
  3. Step 3: Cross multiply
    255,433.47x = 352,455.96 × 154,831.47
  4. Step 4: Simplify right side
    255,433.47x = 54,571,274,397.06
  5. Step 5: Solve for x
    x = 54,571,274,397.06/255,433.47
  6. Step 6: Final answer
    x = 213,641.83

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1.5x scale

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.