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Finding the Fourth Proportional to 304,787.20, 457,180.80 and 127,235.20

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Solution

The fourth proportional to 304,787.20, 457,180.80 and 127,235.20 is: 190,852.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,787.20 : 457,180.80 = 127,235.20 : x
  2. Step 2: Convert to fraction form
    304,787.20/457,180.80 = 127,235.20/x
  3. Step 3: Cross multiply
    304,787.20x = 457,180.80 × 127,235.20
  4. Step 4: Simplify right side
    304,787.20x = 58,169,490,524.16
  5. Step 5: Solve for x
    x = 58,169,490,524.16/304,787.20
  6. Step 6: Final answer
    x = 190,852.80

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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.