Home / 459,172.80-688,804.56-143,635.68

Finding the Fourth Proportional to 459,172.80, 688,804.56 and 143,635.68

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Solution

The fourth proportional to 459,172.80, 688,804.56 and 143,635.68 is: 215,467.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,172.80 : 688,804.56 = 143,635.68 : x
  2. Step 2: Convert to fraction form
    459,172.80/688,804.56 = 143,635.68/x
  3. Step 3: Cross multiply
    459,172.80x = 688,804.56 × 143,635.68
  4. Step 4: Simplify right side
    459,172.80x = 98,936,911,362.70
  5. Step 5: Solve for x
    x = 98,936,911,362.70/459,172.80
  6. Step 6: Final answer
    x = 215,467.71

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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.