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Finding the Fourth Proportional to 405,395.40, 607,262.88 and 227,528.88

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Solution

The fourth proportional to 405,395.40, 607,262.88 and 227,528.88 is: 340,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,395.40 : 607,262.88 = 227,528.88 : x
  2. Step 2: Convert to fraction form
    405,395.40/607,262.88 = 227,528.88/x
  3. Step 3: Cross multiply
    405,395.40x = 607,262.88 × 227,528.88
  4. Step 4: Simplify right side
    405,395.40x = 138,169,842,951.97
  5. Step 5: Solve for x
    x = 138,169,842,951.97/405,395.40
  6. Step 6: Final answer
    x = 340,827.36

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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.