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Finding the Fourth Proportional to 456,214.60, 684,710.70 and 203,883.40

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Solution

The fourth proportional to 456,214.60, 684,710.70 and 203,883.40 is: 305,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,214.60 : 684,710.70 = 203,883.40 : x
  2. Step 2: Convert to fraction form
    456,214.60/684,710.70 = 203,883.40/x
  3. Step 3: Cross multiply
    456,214.60x = 684,710.70 × 203,883.40
  4. Step 4: Simplify right side
    456,214.60x = 139,601,145,532.38
  5. Step 5: Solve for x
    x = 139,601,145,532.38/456,214.60
  6. Step 6: Final answer
    x = 305,998.86

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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.