Home / 304,787.12-420,809.63-190,111.77

Finding the Fourth Proportional to 304,787.12, 420,809.63 and 190,111.77

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Solution

The fourth proportional to 304,787.12, 420,809.63 and 190,111.77 is: 262,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,787.12 : 420,809.63 = 190,111.77 : x
  2. Step 2: Convert to fraction form
    304,787.12/420,809.63 = 190,111.77/x
  3. Step 3: Cross multiply
    304,787.12x = 420,809.63 × 190,111.77
  4. Step 4: Simplify right side
    304,787.12x = 80,000,862,641.79
  5. Step 5: Solve for x
    x = 80,000,862,641.79/304,787.12
  6. Step 6: Final answer
    x = 262,481.12

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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.