Home / 192,021.60-288,032.40-172,387.20

Finding the Fourth Proportional to 192,021.60, 288,032.40 and 172,387.20

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Solution

The fourth proportional to 192,021.60, 288,032.40 and 172,387.20 is: 258,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,021.60 : 288,032.40 = 172,387.20 : x
  2. Step 2: Convert to fraction form
    192,021.60/288,032.40 = 172,387.20/x
  3. Step 3: Cross multiply
    192,021.60x = 288,032.40 × 172,387.20
  4. Step 4: Simplify right side
    192,021.60x = 49,653,098,945.28
  5. Step 5: Solve for x
    x = 49,653,098,945.28/192,021.60
  6. Step 6: Final answer
    x = 258,580.80

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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.