Home / 459,620.40-689,452.20-144,087.60

Finding the Fourth Proportional to 459,620.40, 689,452.20 and 144,087.60

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Solution

The fourth proportional to 459,620.40, 689,452.20 and 144,087.60 is: 216,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,620.40 : 689,452.20 = 144,087.60 : x
  2. Step 2: Convert to fraction form
    459,620.40/689,452.20 = 144,087.60/x
  3. Step 3: Cross multiply
    459,620.40x = 689,452.20 × 144,087.60
  4. Step 4: Simplify right side
    459,620.40x = 99,341,512,812.72
  5. Step 5: Solve for x
    x = 99,341,512,812.72/459,620.40
  6. Step 6: Final answer
    x = 216,138.17

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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.