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Finding the Fourth Proportional to 520,114.20, 780,320.75 and 216,449.25

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Solution

The fourth proportional to 520,114.20, 780,320.75 and 216,449.25 is: 324,736.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,114.20 : 780,320.75 = 216,449.25 : x
  2. Step 2: Convert to fraction form
    520,114.20/780,320.75 = 216,449.25/x
  3. Step 3: Cross multiply
    520,114.20x = 780,320.75 × 216,449.25
  4. Step 4: Simplify right side
    520,114.20x = 168,899,837,088.49
  5. Step 5: Solve for x
    x = 168,899,837,088.49/520,114.20
  6. Step 6: Final answer
    x = 324,736.06

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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.