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Finding the Fourth Proportional to 253,500.81, 349,831.12 and 140,323.56

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Solution

The fourth proportional to 253,500.81, 349,831.12 and 140,323.56 is: 193,646.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,500.81 : 349,831.12 = 140,323.56 : x
  2. Step 2: Convert to fraction form
    253,500.81/349,831.12 = 140,323.56/x
  3. Step 3: Cross multiply
    253,500.81x = 349,831.12 × 140,323.56
  4. Step 4: Simplify right side
    253,500.81x = 49,089,548,157.19
  5. Step 5: Solve for x
    x = 49,089,548,157.19/253,500.81
  6. Step 6: Final answer
    x = 193,646.51

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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.