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Finding the Fourth Proportional to 281,040.96, 387,831.72 and 153,713.82

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Solution

The fourth proportional to 281,040.96, 387,831.72 and 153,713.82 is: 212,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,040.96 : 387,831.72 = 153,713.82 : x
  2. Step 2: Convert to fraction form
    281,040.96/387,831.72 = 153,713.82/x
  3. Step 3: Cross multiply
    281,040.96x = 387,831.72 × 153,713.82
  4. Step 4: Simplify right side
    281,040.96x = 59,615,095,198.37
  5. Step 5: Solve for x
    x = 59,615,095,198.37/281,040.96
  6. Step 6: Final answer
    x = 212,122.44

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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.