Home / 221,310.36-305,387.82-125,798.40

Finding the Fourth Proportional to 221,310.36, 305,387.82 and 125,798.40

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Solution

The fourth proportional to 221,310.36, 305,387.82 and 125,798.40 is: 173,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,310.36 : 305,387.82 = 125,798.40 : x
  2. Step 2: Convert to fraction form
    221,310.36/305,387.82 = 125,798.40/x
  3. Step 3: Cross multiply
    221,310.36x = 305,387.82 × 125,798.40
  4. Step 4: Simplify right side
    221,310.36x = 38,417,299,135.49
  5. Step 5: Solve for x
    x = 38,417,299,135.49/221,310.36
  6. Step 6: Final answer
    x = 173,590.15

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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.