Home / 459,639.27-689,458.89-144,121.59

Finding the Fourth Proportional to 459,639.27, 689,458.89 and 144,121.59

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Solution

The fourth proportional to 459,639.27, 689,458.89 and 144,121.59 is: 216,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,639.27 : 689,458.89 = 144,121.59 : x
  2. Step 2: Convert to fraction form
    459,639.27/689,458.89 = 144,121.59/x
  3. Step 3: Cross multiply
    459,639.27x = 689,458.89 × 144,121.59
  4. Step 4: Simplify right side
    459,639.27x = 99,365,911,466.44
  5. Step 5: Solve for x
    x = 99,365,911,466.44/459,639.27
  6. Step 6: Final answer
    x = 216,182.38

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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.