Home / 286,526.43-429,642-128,619.54

Finding the Fourth Proportional to 286,526.43, 429,642 and 128,619.54

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Solution

The fourth proportional to 286,526.43, 429,642 and 128,619.54 is: 192,863.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,526.43 : 429,642 = 128,619.54 : x
  2. Step 2: Convert to fraction form
    286,526.43/429,642 = 128,619.54/x
  3. Step 3: Cross multiply
    286,526.43x = 429,642 × 128,619.54
  4. Step 4: Simplify right side
    286,526.43x = 55,260,356,404.68
  5. Step 5: Solve for x
    x = 55,260,356,404.68/286,526.43
  6. Step 6: Final answer
    x = 192,863.03

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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.