Home / 286,045.02-428,812.38-108,431.46

Finding the Fourth Proportional to 286,045.02, 428,812.38 and 108,431.46

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Solution

The fourth proportional to 286,045.02, 428,812.38 and 108,431.46 is: 162,550.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,045.02 : 428,812.38 = 108,431.46 : x
  2. Step 2: Convert to fraction form
    286,045.02/428,812.38 = 108,431.46/x
  3. Step 3: Cross multiply
    286,045.02x = 428,812.38 × 108,431.46
  4. Step 4: Simplify right side
    286,045.02x = 46,496,752,429.47
  5. Step 5: Solve for x
    x = 46,496,752,429.47/286,045.02
  6. Step 6: Final answer
    x = 162,550.47

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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.