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Finding the Fourth Proportional to 286,660.71, 429,992.01 and 86,982.75

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Solution

The fourth proportional to 286,660.71, 429,992.01 and 86,982.75 is: 130,474.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,660.71 : 429,992.01 = 86,982.75 : x
  2. Step 2: Convert to fraction form
    286,660.71/429,992.01 = 86,982.75/x
  3. Step 3: Cross multiply
    286,660.71x = 429,992.01 × 86,982.75
  4. Step 4: Simplify right side
    286,660.71x = 37,401,887,507.83
  5. Step 5: Solve for x
    x = 37,401,887,507.83/286,660.71
  6. Step 6: Final answer
    x = 130,474.41

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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.