Home / 221,434.51-305,570.83-130,819.66

Finding the Fourth Proportional to 221,434.51, 305,570.83 and 130,819.66

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Solution

The fourth proportional to 221,434.51, 305,570.83 and 130,819.66 is: 180,525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,434.51 : 305,570.83 = 130,819.66 : x
  2. Step 2: Convert to fraction form
    221,434.51/305,570.83 = 130,819.66/x
  3. Step 3: Cross multiply
    221,434.51x = 305,570.83 × 130,819.66
  4. Step 4: Simplify right side
    221,434.51x = 39,974,671,240.83
  5. Step 5: Solve for x
    x = 39,974,671,240.83/221,434.51
  6. Step 6: Final answer
    x = 180,525.93

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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.