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Finding the Fourth Proportional to 638,124.40, 957,013.80 and 188,844.40

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Solution

The fourth proportional to 638,124.40, 957,013.80 and 188,844.40 is: 283,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,124.40 : 957,013.80 = 188,844.40 : x
  2. Step 2: Convert to fraction form
    638,124.40/957,013.80 = 188,844.40/x
  3. Step 3: Cross multiply
    638,124.40x = 957,013.80 × 188,844.40
  4. Step 4: Simplify right side
    638,124.40x = 180,726,696,852.72
  5. Step 5: Solve for x
    x = 180,726,696,852.72/638,124.40
  6. Step 6: Final answer
    x = 283,215.46

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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.