Home / 459,530.40-689,317.20-143,997.60

Finding the Fourth Proportional to 459,530.40, 689,317.20 and 143,997.60

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Solution

The fourth proportional to 459,530.40, 689,317.20 and 143,997.60 is: 216,003.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,530.40 : 689,317.20 = 143,997.60 : x
  2. Step 2: Convert to fraction form
    459,530.40/689,317.20 = 143,997.60/x
  3. Step 3: Cross multiply
    459,530.40x = 689,317.20 × 143,997.60
  4. Step 4: Simplify right side
    459,530.40x = 99,260,022,438.72
  5. Step 5: Solve for x
    x = 99,260,022,438.72/459,530.40
  6. Step 6: Final answer
    x = 216,003.17

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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.