Home / 221,010.93-305,031.78-130,389.17

Finding the Fourth Proportional to 221,010.93, 305,031.78 and 130,389.17

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Solution

The fourth proportional to 221,010.93, 305,031.78 and 130,389.17 is: 179,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,010.93 : 305,031.78 = 130,389.17 : x
  2. Step 2: Convert to fraction form
    221,010.93/305,031.78 = 130,389.17/x
  3. Step 3: Cross multiply
    221,010.93x = 305,031.78 × 130,389.17
  4. Step 4: Simplify right side
    221,010.93x = 39,772,840,617.82
  5. Step 5: Solve for x
    x = 39,772,840,617.82/221,010.93
  6. Step 6: Final answer
    x = 179,958.70

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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.