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Finding the Fourth Proportional to 243,053.12, 335,363.22 and 139,667.34

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Solution

The fourth proportional to 243,053.12, 335,363.22 and 139,667.34 is: 192,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,053.12 : 335,363.22 = 139,667.34 : x
  2. Step 2: Convert to fraction form
    243,053.12/335,363.22 = 139,667.34/x
  3. Step 3: Cross multiply
    243,053.12x = 335,363.22 × 139,667.34
  4. Step 4: Simplify right side
    243,053.12x = 46,839,289,394.99
  5. Step 5: Solve for x
    x = 46,839,289,394.99/243,053.12
  6. Step 6: Final answer
    x = 192,712.15

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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.