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Finding the Fourth Proportional to 459,039.55, 688,504.55 and 122,104.86

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Solution

The fourth proportional to 459,039.55, 688,504.55 and 122,104.86 is: 183,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,039.55 : 688,504.55 = 122,104.86 : x
  2. Step 2: Convert to fraction form
    459,039.55/688,504.55 = 122,104.86/x
  3. Step 3: Cross multiply
    459,039.55x = 688,504.55 × 122,104.86
  4. Step 4: Simplify right side
    459,039.55x = 84,069,751,076.59
  5. Step 5: Solve for x
    x = 84,069,751,076.59/459,039.55
  6. Step 6: Final answer
    x = 183,142.72

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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.