Home / 279,153.12-385,234.56-151,831.68

Finding the Fourth Proportional to 279,153.12, 385,234.56 and 151,831.68

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Solution

The fourth proportional to 279,153.12, 385,234.56 and 151,831.68 is: 209,529.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,153.12 : 385,234.56 = 151,831.68 : x
  2. Step 2: Convert to fraction form
    279,153.12/385,234.56 = 151,831.68/x
  3. Step 3: Cross multiply
    279,153.12x = 385,234.56 × 151,831.68
  4. Step 4: Simplify right side
    279,153.12x = 58,490,810,438.86
  5. Step 5: Solve for x
    x = 58,490,810,438.86/279,153.12
  6. Step 6: Final answer
    x = 209,529.49

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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.