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Finding the Fourth Proportional to 552,954.15, 763,078.05 and 311,240.16

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Solution

The fourth proportional to 552,954.15, 763,078.05 and 311,240.16 is: 429,512.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,954.15 : 763,078.05 = 311,240.16 : x
  2. Step 2: Convert to fraction form
    552,954.15/763,078.05 = 311,240.16/x
  3. Step 3: Cross multiply
    552,954.15x = 763,078.05 × 311,240.16
  4. Step 4: Simplify right side
    552,954.15x = 237,500,534,374.49
  5. Step 5: Solve for x
    x = 237,500,534,374.49/552,954.15
  6. Step 6: Final answer
    x = 429,512.17

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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.