Home / 286,813.56-430,416.36-99,825.06

Finding the Fourth Proportional to 286,813.56, 430,416.36 and 99,825.06

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Solution

The fourth proportional to 286,813.56, 430,416.36 and 99,825.06 is: 149,805.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,813.56 : 430,416.36 = 99,825.06 : x
  2. Step 2: Convert to fraction form
    286,813.56/430,416.36 = 99,825.06/x
  3. Step 3: Cross multiply
    286,813.56x = 430,416.36 × 99,825.06
  4. Step 4: Simplify right side
    286,813.56x = 42,966,338,961.98
  5. Step 5: Solve for x
    x = 42,966,338,961.98/286,813.56
  6. Step 6: Final answer
    x = 149,805.81

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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.