Home / 221,018.94-305,042.73-130,397.07

Finding the Fourth Proportional to 221,018.94, 305,042.73 and 130,397.07

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Solution

The fourth proportional to 221,018.94, 305,042.73 and 130,397.07 is: 179,969.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,018.94 : 305,042.73 = 130,397.07 : x
  2. Step 2: Convert to fraction form
    221,018.94/305,042.73 = 130,397.07/x
  3. Step 3: Cross multiply
    221,018.94x = 305,042.73 × 130,397.07
  4. Step 4: Simplify right side
    221,018.94x = 39,776,678,216.80
  5. Step 5: Solve for x
    x = 39,776,678,216.80/221,018.94
  6. Step 6: Final answer
    x = 179,969.55

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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.