Home / 258,021.60-387,032.40-156,982.20

Finding the Fourth Proportional to 258,021.60, 387,032.40 and 156,982.20

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Solution

The fourth proportional to 258,021.60, 387,032.40 and 156,982.20 is: 235,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,021.60 : 387,032.40 = 156,982.20 : x
  2. Step 2: Convert to fraction form
    258,021.60/387,032.40 = 156,982.20/x
  3. Step 3: Cross multiply
    258,021.60x = 387,032.40 × 156,982.20
  4. Step 4: Simplify right side
    258,021.60x = 60,757,197,623.28
  5. Step 5: Solve for x
    x = 60,757,197,623.28/258,021.60
  6. Step 6: Final answer
    x = 235,473.30

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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.