Home / 305,530.11-421,439.75-181,263.10

Finding the Fourth Proportional to 305,530.11, 421,439.75 and 181,263.10

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Solution

The fourth proportional to 305,530.11, 421,439.75 and 181,263.10 is: 250,029.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,530.11 : 421,439.75 = 181,263.10 : x
  2. Step 2: Convert to fraction form
    305,530.11/421,439.75 = 181,263.10/x
  3. Step 3: Cross multiply
    305,530.11x = 421,439.75 × 181,263.10
  4. Step 4: Simplify right side
    305,530.11x = 76,391,475,548.23
  5. Step 5: Solve for x
    x = 76,391,475,548.23/305,530.11
  6. Step 6: Final answer
    x = 250,029.29

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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.