Home / 228,839.07-315,814.55-138,217.08

Finding the Fourth Proportional to 228,839.07, 315,814.55 and 138,217.08

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Solution

The fourth proportional to 228,839.07, 315,814.55 and 138,217.08 is: 190,749.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,839.07 : 315,814.55 = 138,217.08 : x
  2. Step 2: Convert to fraction form
    228,839.07/315,814.55 = 138,217.08/x
  3. Step 3: Cross multiply
    228,839.07x = 315,814.55 × 138,217.08
  4. Step 4: Simplify right side
    228,839.07x = 43,650,964,922.51
  5. Step 5: Solve for x
    x = 43,650,964,922.51/228,839.07
  6. Step 6: Final answer
    x = 190,749.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.