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Finding the Fourth Proportional to 520,027.64, 780,172.68 and 239,741.72

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Solution

The fourth proportional to 520,027.64, 780,172.68 and 239,741.72 is: 359,673.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,027.64 : 780,172.68 = 239,741.72 : x
  2. Step 2: Convert to fraction form
    520,027.64/780,172.68 = 239,741.72/x
  3. Step 3: Cross multiply
    520,027.64x = 780,172.68 × 239,741.72
  4. Step 4: Simplify right side
    520,027.64x = 187,039,940,200.21
  5. Step 5: Solve for x
    x = 187,039,940,200.21/520,027.64
  6. Step 6: Final answer
    x = 359,673.07

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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.