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Finding the Fourth Proportional to 553,313.94, 763,605.78 and 338,495.18

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Solution

The fourth proportional to 553,313.94, 763,605.78 and 338,495.18 is: 467,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,313.94 : 763,605.78 = 338,495.18 : x
  2. Step 2: Convert to fraction form
    553,313.94/763,605.78 = 338,495.18/x
  3. Step 3: Cross multiply
    553,313.94x = 763,605.78 × 338,495.18
  4. Step 4: Simplify right side
    553,313.94x = 258,476,872,132.11
  5. Step 5: Solve for x
    x = 258,476,872,132.11/553,313.94
  6. Step 6: Final answer
    x = 467,143.25

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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.