Home / 459,645.39-689,468.22-144,126.90

Finding the Fourth Proportional to 459,645.39, 689,468.22 and 144,126.90

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Solution

The fourth proportional to 459,645.39, 689,468.22 and 144,126.90 is: 216,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,645.39 : 689,468.22 = 144,126.90 : x
  2. Step 2: Convert to fraction form
    459,645.39/689,468.22 = 144,126.90/x
  3. Step 3: Cross multiply
    459,645.39x = 689,468.22 × 144,126.90
  4. Step 4: Simplify right side
    459,645.39x = 99,370,917,197.12
  5. Step 5: Solve for x
    x = 99,370,917,197.12/459,645.39
  6. Step 6: Final answer
    x = 216,190.39

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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.