Home / 305,009.28-420,387.08-202,852.04

Finding the Fourth Proportional to 305,009.28, 420,387.08 and 202,852.04

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Solution

The fourth proportional to 305,009.28, 420,387.08 and 202,852.04 is: 279,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,009.28 : 420,387.08 = 202,852.04 : x
  2. Step 2: Convert to fraction form
    305,009.28/420,387.08 = 202,852.04/x
  3. Step 3: Cross multiply
    305,009.28x = 420,387.08 × 202,852.04
  4. Step 4: Simplify right side
    305,009.28x = 85,276,376,767.64
  5. Step 5: Solve for x
    x = 85,276,376,767.64/305,009.28
  6. Step 6: Final answer
    x = 279,586.17

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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.