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Finding the Fourth Proportional to 399,151.12, 550,833.72 and 235,813

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Solution

The fourth proportional to 399,151.12, 550,833.72 and 235,813 is: 325,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,151.12 : 550,833.72 = 235,813 : x
  2. Step 2: Convert to fraction form
    399,151.12/550,833.72 = 235,813/x
  3. Step 3: Cross multiply
    399,151.12x = 550,833.72 × 235,813
  4. Step 4: Simplify right side
    399,151.12x = 129,893,752,014.36
  5. Step 5: Solve for x
    x = 129,893,752,014.36/399,151.12
  6. Step 6: Final answer
    x = 325,425.00

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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.