Home / 280,554.22-386,908.41-219,308.50

Finding the Fourth Proportional to 280,554.22, 386,908.41 and 219,308.50

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Solution

The fourth proportional to 280,554.22, 386,908.41 and 219,308.50 is: 302,445.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,554.22 : 386,908.41 = 219,308.50 : x
  2. Step 2: Convert to fraction form
    280,554.22/386,908.41 = 219,308.50/x
  3. Step 3: Cross multiply
    280,554.22x = 386,908.41 × 219,308.50
  4. Step 4: Simplify right side
    280,554.22x = 84,852,303,034.49
  5. Step 5: Solve for x
    x = 84,852,303,034.49/280,554.22
  6. Step 6: Final answer
    x = 302,445.29

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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.