Home / 309,200.45-463,788.55-129,239.40

Finding the Fourth Proportional to 309,200.45, 463,788.55 and 129,239.40

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Solution

The fourth proportional to 309,200.45, 463,788.55 and 129,239.40 is: 193,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,200.45 : 463,788.55 = 129,239.40 : x
  2. Step 2: Convert to fraction form
    309,200.45/463,788.55 = 129,239.40/x
  3. Step 3: Cross multiply
    309,200.45x = 463,788.55 × 129,239.40
  4. Step 4: Simplify right side
    309,200.45x = 59,939,753,928.87
  5. Step 5: Solve for x
    x = 59,939,753,928.87/309,200.45
  6. Step 6: Final answer
    x = 193,854.03

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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.