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Finding the Fourth Proportional to 423,964.80, 635,947.20 and 187,768.80

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Solution

The fourth proportional to 423,964.80, 635,947.20 and 187,768.80 is: 281,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,964.80 : 635,947.20 = 187,768.80 : x
  2. Step 2: Convert to fraction form
    423,964.80/635,947.20 = 187,768.80/x
  3. Step 3: Cross multiply
    423,964.80x = 635,947.20 × 187,768.80
  4. Step 4: Simplify right side
    423,964.80x = 119,411,042,607.36
  5. Step 5: Solve for x
    x = 119,411,042,607.36/423,964.80
  6. Step 6: Final answer
    x = 281,653.20

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Similar ratio
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1.5x scale

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.