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Finding the Fourth Proportional to 458,079.50, 631,887.08 and 285,698.19

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Solution

The fourth proportional to 458,079.50, 631,887.08 and 285,698.19 is: 394,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,079.50 : 631,887.08 = 285,698.19 : x
  2. Step 2: Convert to fraction form
    458,079.50/631,887.08 = 285,698.19/x
  3. Step 3: Cross multiply
    458,079.50x = 631,887.08 × 285,698.19
  4. Step 4: Simplify right side
    458,079.50x = 180,528,995,040.39
  5. Step 5: Solve for x
    x = 180,528,995,040.39/458,079.50
  6. Step 6: Final answer
    x = 394,099.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.