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Finding the Fourth Proportional to 205,412.10, 308,118.15 and 93,048.90

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Solution

The fourth proportional to 205,412.10, 308,118.15 and 93,048.90 is: 139,573.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,412.10 : 308,118.15 = 93,048.90 : x
  2. Step 2: Convert to fraction form
    205,412.10/308,118.15 = 93,048.90/x
  3. Step 3: Cross multiply
    205,412.10x = 308,118.15 × 93,048.90
  4. Step 4: Simplify right side
    205,412.10x = 28,670,054,927.54
  5. Step 5: Solve for x
    x = 28,670,054,927.54/205,412.10
  6. Step 6: Final answer
    x = 139,573.35

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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.