Home / 286,200.80-429,301.20-86,661.35

Finding the Fourth Proportional to 286,200.80, 429,301.20 and 86,661.35

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Solution

The fourth proportional to 286,200.80, 429,301.20 and 86,661.35 is: 129,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,200.80 : 429,301.20 = 86,661.35 : x
  2. Step 2: Convert to fraction form
    286,200.80/429,301.20 = 86,661.35/x
  3. Step 3: Cross multiply
    286,200.80x = 429,301.20 × 86,661.35
  4. Step 4: Simplify right side
    286,200.80x = 37,203,821,548.62
  5. Step 5: Solve for x
    x = 37,203,821,548.62/286,200.80
  6. Step 6: Final answer
    x = 129,992.03

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1.5x scale

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.