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Finding the Fourth Proportional to 458,224.60, 687,336.90 and 121,264.60

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Solution

The fourth proportional to 458,224.60, 687,336.90 and 121,264.60 is: 181,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,224.60 : 687,336.90 = 121,264.60 : x
  2. Step 2: Convert to fraction form
    458,224.60/687,336.90 = 121,264.60/x
  3. Step 3: Cross multiply
    458,224.60x = 687,336.90 × 121,264.60
  4. Step 4: Simplify right side
    458,224.60x = 83,349,634,243.74
  5. Step 5: Solve for x
    x = 83,349,634,243.74/458,224.60
  6. Step 6: Final answer
    x = 181,896.90

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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.