Home / 282,047.13-389,218.37-154,721.61

Finding the Fourth Proportional to 282,047.13, 389,218.37 and 154,721.61

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Solution

The fourth proportional to 282,047.13, 389,218.37 and 154,721.61 is: 213,512.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,047.13 : 389,218.37 = 154,721.61 : x
  2. Step 2: Convert to fraction form
    282,047.13/389,218.37 = 154,721.61/x
  3. Step 3: Cross multiply
    282,047.13x = 389,218.37 × 154,721.61
  4. Step 4: Simplify right side
    282,047.13x = 60,220,492,074.37
  5. Step 5: Solve for x
    x = 60,220,492,074.37/282,047.13
  6. Step 6: Final answer
    x = 213,512.16

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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.