Home / 638,143.80-956,877.08-188,802.78

Finding the Fourth Proportional to 638,143.80, 956,877.08 and 188,802.78

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Solution

The fourth proportional to 638,143.80, 956,877.08 and 188,802.78 is: 283,103.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,143.80 : 956,877.08 = 188,802.78 : x
  2. Step 2: Convert to fraction form
    638,143.80/956,877.08 = 188,802.78/x
  3. Step 3: Cross multiply
    638,143.80x = 956,877.08 × 188,802.78
  4. Step 4: Simplify right side
    638,143.80x = 180,661,052,822.28
  5. Step 5: Solve for x
    x = 180,661,052,822.28/638,143.80
  6. Step 6: Final answer
    x = 283,103.99

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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.