Home / 205,437.63-307,630.35-142,170.15

Finding the Fourth Proportional to 205,437.63, 307,630.35 and 142,170.15

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Solution

The fourth proportional to 205,437.63, 307,630.35 and 142,170.15 is: 212,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,437.63 : 307,630.35 = 142,170.15 : x
  2. Step 2: Convert to fraction form
    205,437.63/307,630.35 = 142,170.15/x
  3. Step 3: Cross multiply
    205,437.63x = 307,630.35 × 142,170.15
  4. Step 4: Simplify right side
    205,437.63x = 43,735,853,004.05
  5. Step 5: Solve for x
    x = 43,735,853,004.05/205,437.63
  6. Step 6: Final answer
    x = 212,891.15

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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.