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Finding the Fourth Proportional to 553,058.66, 763,278.10 and 338,341.43

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Solution

The fourth proportional to 553,058.66, 763,278.10 and 338,341.43 is: 466,946.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,058.66 : 763,278.10 = 338,341.43 : x
  2. Step 2: Convert to fraction form
    553,058.66/763,278.10 = 338,341.43/x
  3. Step 3: Cross multiply
    553,058.66x = 763,278.10 × 338,341.43
  4. Step 4: Simplify right side
    553,058.66x = 258,248,599,179.44
  5. Step 5: Solve for x
    x = 258,248,599,179.44/553,058.66
  6. Step 6: Final answer
    x = 466,946.13

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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.