Home / 509,631.01-703,291.25-280,192.21

Finding the Fourth Proportional to 509,631.01, 703,291.25 and 280,192.21

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Solution

The fourth proportional to 509,631.01, 703,291.25 and 280,192.21 is: 386,665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,631.01 : 703,291.25 = 280,192.21 : x
  2. Step 2: Convert to fraction form
    509,631.01/703,291.25 = 280,192.21/x
  3. Step 3: Cross multiply
    509,631.01x = 703,291.25 × 280,192.21
  4. Step 4: Simplify right side
    509,631.01x = 197,056,729,611.16
  5. Step 5: Solve for x
    x = 197,056,729,611.16/509,631.01
  6. Step 6: Final answer
    x = 386,665.50

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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.