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Finding the Fourth Proportional to 394,580.20, 591,870.30 and 157,959.40

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Solution

The fourth proportional to 394,580.20, 591,870.30 and 157,959.40 is: 236,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,580.20 : 591,870.30 = 157,959.40 : x
  2. Step 2: Convert to fraction form
    394,580.20/591,870.30 = 157,959.40/x
  3. Step 3: Cross multiply
    394,580.20x = 591,870.30 × 157,959.40
  4. Step 4: Simplify right side
    394,580.20x = 93,491,477,465.82
  5. Step 5: Solve for x
    x = 93,491,477,465.82/394,580.20
  6. Step 6: Final answer
    x = 236,939.10

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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.