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Finding the Fourth Proportional to 520,173.37, 780,287.06 and 165,215.17

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Solution

The fourth proportional to 520,173.37, 780,287.06 and 165,215.17 is: 247,831.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,173.37 : 780,287.06 = 165,215.17 : x
  2. Step 2: Convert to fraction form
    520,173.37/780,287.06 = 165,215.17/x
  3. Step 3: Cross multiply
    520,173.37x = 780,287.06 × 165,215.17
  4. Step 4: Simplify right side
    520,173.37x = 128,915,259,266.70
  5. Step 5: Solve for x
    x = 128,915,259,266.70/520,173.37
  6. Step 6: Final answer
    x = 247,831.33

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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.