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Finding the Fourth Proportional to 270,168.40, 405,004.80 and 103,831.12

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Solution

The fourth proportional to 270,168.40, 405,004.80 and 103,831.12 is: 155,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,168.40 : 405,004.80 = 103,831.12 : x
  2. Step 2: Convert to fraction form
    270,168.40/405,004.80 = 103,831.12/x
  3. Step 3: Cross multiply
    270,168.40x = 405,004.80 × 103,831.12
  4. Step 4: Simplify right side
    270,168.40x = 42,052,101,989.38
  5. Step 5: Solve for x
    x = 42,052,101,989.38/270,168.40
  6. Step 6: Final answer
    x = 155,651.45

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1.5x scale

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.