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Finding the Fourth Proportional to 425,080.91, 638,332.11 and 265,528.33

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Solution

The fourth proportional to 425,080.91, 638,332.11 and 265,528.33 is: 398,736.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,080.91 : 638,332.11 = 265,528.33 : x
  2. Step 2: Convert to fraction form
    425,080.91/638,332.11 = 265,528.33/x
  3. Step 3: Cross multiply
    425,080.91x = 638,332.11 × 265,528.33
  4. Step 4: Simplify right side
    425,080.91x = 169,495,257,557.85
  5. Step 5: Solve for x
    x = 169,495,257,557.85/425,080.91
  6. Step 6: Final answer
    x = 398,736.46

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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.