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Finding the Fourth Proportional to 425,508.63, 638,357.57 and 185,661.41

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Solution

The fourth proportional to 425,508.63, 638,357.57 and 185,661.41 is: 278,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,508.63 : 638,357.57 = 185,661.41 : x
  2. Step 2: Convert to fraction form
    425,508.63/638,357.57 = 185,661.41/x
  3. Step 3: Cross multiply
    425,508.63x = 638,357.57 × 185,661.41
  4. Step 4: Simplify right side
    425,508.63x = 118,518,366,530.37
  5. Step 5: Solve for x
    x = 118,518,366,530.37/425,508.63
  6. Step 6: Final answer
    x = 278,533.40

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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.