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Finding the Fourth Proportional to 456,122.20, 684,329.10 and 156,794.80

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Solution

The fourth proportional to 456,122.20, 684,329.10 and 156,794.80 is: 235,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,122.20 : 684,329.10 = 156,794.80 : x
  2. Step 2: Convert to fraction form
    456,122.20/684,329.10 = 156,794.80/x
  3. Step 3: Cross multiply
    456,122.20x = 684,329.10 × 156,794.80
  4. Step 4: Simplify right side
    456,122.20x = 107,299,244,368.68
  5. Step 5: Solve for x
    x = 107,299,244,368.68/456,122.20
  6. Step 6: Final answer
    x = 235,242.32

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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.