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Finding the Fourth Proportional to 425,112.76, 637,518.84 and 125,513.20

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Solution

The fourth proportional to 425,112.76, 637,518.84 and 125,513.20 is: 188,225.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,112.76 : 637,518.84 = 125,513.20 : x
  2. Step 2: Convert to fraction form
    425,112.76/637,518.84 = 125,513.20/x
  3. Step 3: Cross multiply
    425,112.76x = 637,518.84 × 125,513.20
  4. Step 4: Simplify right side
    425,112.76x = 80,017,029,668.69
  5. Step 5: Solve for x
    x = 80,017,029,668.69/425,112.76
  6. Step 6: Final answer
    x = 188,225.42

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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.