Home / 459,488.12-689,232.48-143,969.63

Finding the Fourth Proportional to 459,488.12, 689,232.48 and 143,969.63

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Solution

The fourth proportional to 459,488.12, 689,232.48 and 143,969.63 is: 215,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,488.12 : 689,232.48 = 143,969.63 : x
  2. Step 2: Convert to fraction form
    459,488.12/689,232.48 = 143,969.63/x
  3. Step 3: Cross multiply
    459,488.12x = 689,232.48 × 143,969.63
  4. Step 4: Simplify right side
    459,488.12x = 99,228,541,143.53
  5. Step 5: Solve for x
    x = 99,228,541,143.53/459,488.12
  6. Step 6: Final answer
    x = 215,954.53

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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.