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Finding the Fourth Proportional to 574,382.40, 861,746.40 and 308,270.40

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Solution

The fourth proportional to 574,382.40, 861,746.40 and 308,270.40 is: 462,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,382.40 : 861,746.40 = 308,270.40 : x
  2. Step 2: Convert to fraction form
    574,382.40/861,746.40 = 308,270.40/x
  3. Step 3: Cross multiply
    574,382.40x = 861,746.40 × 308,270.40
  4. Step 4: Simplify right side
    574,382.40x = 265,650,907,426.56
  5. Step 5: Solve for x
    x = 265,650,907,426.56/574,382.40
  6. Step 6: Final answer
    x = 462,498.34

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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.