Home / 459,659.34-689,489-144,140.85

Finding the Fourth Proportional to 459,659.34, 689,489 and 144,140.85

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Solution

The fourth proportional to 459,659.34, 689,489 and 144,140.85 is: 216,211.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,659.34 : 689,489 = 144,140.85 : x
  2. Step 2: Convert to fraction form
    459,659.34/689,489 = 144,140.85/x
  3. Step 3: Cross multiply
    459,659.34x = 689,489 × 144,140.85
  4. Step 4: Simplify right side
    459,659.34x = 99,383,527,078.21
  5. Step 5: Solve for x
    x = 99,383,527,078.21/459,659.34
  6. Step 6: Final answer
    x = 216,211.27

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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.