Home / 215,811.04-297,798-120,308.80

Finding the Fourth Proportional to 215,811.04, 297,798 and 120,308.80

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Solution

The fourth proportional to 215,811.04, 297,798 and 120,308.80 is: 166,014.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,811.04 : 297,798 = 120,308.80 : x
  2. Step 2: Convert to fraction form
    215,811.04/297,798 = 120,308.80/x
  3. Step 3: Cross multiply
    215,811.04x = 297,798 × 120,308.80
  4. Step 4: Simplify right side
    215,811.04x = 35,827,720,022.40
  5. Step 5: Solve for x
    x = 35,827,720,022.40/215,811.04
  6. Step 6: Final answer
    x = 166,014.31

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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.