Home / 260,829.10-391,243.65-201,780.10

Finding the Fourth Proportional to 260,829.10, 391,243.65 and 201,780.10

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Solution

The fourth proportional to 260,829.10, 391,243.65 and 201,780.10 is: 302,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,829.10 : 391,243.65 = 201,780.10 : x
  2. Step 2: Convert to fraction form
    260,829.10/391,243.65 = 201,780.10/x
  3. Step 3: Cross multiply
    260,829.10x = 391,243.65 × 201,780.10
  4. Step 4: Simplify right side
    260,829.10x = 78,945,182,821.37
  5. Step 5: Solve for x
    x = 78,945,182,821.37/260,829.10
  6. Step 6: Final answer
    x = 302,670.15

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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.