Home / 215,783.29-297,816.03-129,829.15

Finding the Fourth Proportional to 215,783.29, 297,816.03 and 129,829.15

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Solution

The fourth proportional to 215,783.29, 297,816.03 and 129,829.15 is: 179,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,783.29 : 297,816.03 = 129,829.15 : x
  2. Step 2: Convert to fraction form
    215,783.29/297,816.03 = 129,829.15/x
  3. Step 3: Cross multiply
    215,783.29x = 297,816.03 × 129,829.15
  4. Step 4: Simplify right side
    215,783.29x = 38,665,201,382.13
  5. Step 5: Solve for x
    x = 38,665,201,382.13/215,783.29
  6. Step 6: Final answer
    x = 179,185.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.