Home / 221,254.17-305,244.12-136,223.61

Finding the Fourth Proportional to 221,254.17, 305,244.12 and 136,223.61

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Solution

The fourth proportional to 221,254.17, 305,244.12 and 136,223.61 is: 187,935.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,254.17 : 305,244.12 = 136,223.61 : x
  2. Step 2: Convert to fraction form
    221,254.17/305,244.12 = 136,223.61/x
  3. Step 3: Cross multiply
    221,254.17x = 305,244.12 × 136,223.61
  4. Step 4: Simplify right side
    221,254.17x = 41,581,455,957.67
  5. Step 5: Solve for x
    x = 41,581,455,957.67/221,254.17
  6. Step 6: Final answer
    x = 187,935.24

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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.