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Finding the Fourth Proportional to 243,048.17, 335,356.38 and 139,662.39

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Solution

The fourth proportional to 243,048.17, 335,356.38 and 139,662.39 is: 192,705.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,048.17 : 335,356.38 = 139,662.39 : x
  2. Step 2: Convert to fraction form
    243,048.17/335,356.38 = 139,662.39/x
  3. Step 3: Cross multiply
    243,048.17x = 335,356.38 × 139,662.39
  4. Step 4: Simplify right side
    243,048.17x = 46,836,671,855.77
  5. Step 5: Solve for x
    x = 46,836,671,855.77/243,048.17
  6. Step 6: Final answer
    x = 192,705.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.