Home / 428,744.08-643,116.12-148,108.24

Finding the Fourth Proportional to 428,744.08, 643,116.12 and 148,108.24

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Solution

The fourth proportional to 428,744.08, 643,116.12 and 148,108.24 is: 222,162.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,744.08 : 643,116.12 = 148,108.24 : x
  2. Step 2: Convert to fraction form
    428,744.08/643,116.12 = 148,108.24/x
  3. Step 3: Cross multiply
    428,744.08x = 643,116.12 × 148,108.24
  4. Step 4: Simplify right side
    428,744.08x = 95,250,796,648.83
  5. Step 5: Solve for x
    x = 95,250,796,648.83/428,744.08
  6. Step 6: Final answer
    x = 222,162.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.