Home / 459,646.26-689,469.41-144,128.58

Finding the Fourth Proportional to 459,646.26, 689,469.41 and 144,128.58

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Solution

The fourth proportional to 459,646.26, 689,469.41 and 144,128.58 is: 216,192.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,646.26 : 689,469.41 = 144,128.58 : x
  2. Step 2: Convert to fraction form
    459,646.26/689,469.41 = 144,128.58/x
  3. Step 3: Cross multiply
    459,646.26x = 689,469.41 × 144,128.58
  4. Step 4: Simplify right side
    459,646.26x = 99,372,247,016.74
  5. Step 5: Solve for x
    x = 99,372,247,016.74/459,646.26
  6. Step 6: Final answer
    x = 216,192.88

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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.