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Finding the Fourth Proportional to 620,351.28, 930,878.28 and 265,333.68

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Solution

The fourth proportional to 620,351.28, 930,878.28 and 265,333.68 is: 398,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,351.28 : 930,878.28 = 265,333.68 : x
  2. Step 2: Convert to fraction form
    620,351.28/930,878.28 = 265,333.68/x
  3. Step 3: Cross multiply
    620,351.28x = 930,878.28 × 265,333.68
  4. Step 4: Simplify right side
    620,351.28x = 246,993,359,664.47
  5. Step 5: Solve for x
    x = 246,993,359,664.47/620,351.28
  6. Step 6: Final answer
    x = 398,150.80

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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.