Home / 509,631.52-703,291.96-280,192.72

Finding the Fourth Proportional to 509,631.52, 703,291.96 and 280,192.72

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Solution

The fourth proportional to 509,631.52, 703,291.96 and 280,192.72 is: 386,666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,631.52 : 703,291.96 = 280,192.72 : x
  2. Step 2: Convert to fraction form
    509,631.52/703,291.96 = 280,192.72/x
  3. Step 3: Cross multiply
    509,631.52x = 703,291.96 × 280,192.72
  4. Step 4: Simplify right side
    509,631.52x = 197,057,287,226.53
  5. Step 5: Solve for x
    x = 197,057,287,226.53/509,631.52
  6. Step 6: Final answer
    x = 386,666.21

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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.