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Finding the Fourth Proportional to 425,178.32, 636,269.52 and 265,329.44

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Solution

The fourth proportional to 425,178.32, 636,269.52 and 265,329.44 is: 397,059.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,178.32 : 636,269.52 = 265,329.44 : x
  2. Step 2: Convert to fraction form
    425,178.32/636,269.52 = 265,329.44/x
  3. Step 3: Cross multiply
    425,178.32x = 636,269.52 × 265,329.44
  4. Step 4: Simplify right side
    425,178.32x = 168,821,035,430.67
  5. Step 5: Solve for x
    x = 168,821,035,430.67/425,178.32
  6. Step 6: Final answer
    x = 397,059.37

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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.