Home / 459,639.26-689,458.88-144,121.58

Finding the Fourth Proportional to 459,639.26, 689,458.88 and 144,121.58

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Solution

The fourth proportional to 459,639.26, 689,458.88 and 144,121.58 is: 216,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,639.26 : 689,458.88 = 144,121.58 : x
  2. Step 2: Convert to fraction form
    459,639.26/689,458.88 = 144,121.58/x
  3. Step 3: Cross multiply
    459,639.26x = 689,458.88 × 144,121.58
  4. Step 4: Simplify right side
    459,639.26x = 99,365,903,130.63
  5. Step 5: Solve for x
    x = 99,365,903,130.63/459,639.26
  6. Step 6: Final answer
    x = 216,182.37

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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.