Home / 286,053.24-428,982.66-99,021

Finding the Fourth Proportional to 286,053.24, 428,982.66 and 99,021

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Solution

The fourth proportional to 286,053.24, 428,982.66 and 99,021 is: 148,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,053.24 : 428,982.66 = 99,021 : x
  2. Step 2: Convert to fraction form
    286,053.24/428,982.66 = 99,021/x
  3. Step 3: Cross multiply
    286,053.24x = 428,982.66 × 99,021
  4. Step 4: Simplify right side
    286,053.24x = 42,478,291,975.86
  5. Step 5: Solve for x
    x = 42,478,291,975.86/286,053.24
  6. Step 6: Final answer
    x = 148,497.85

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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.