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Finding the Fourth Proportional to 402,338.94, 554,996.78 and 251,173.50

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Solution

The fourth proportional to 402,338.94, 554,996.78 and 251,173.50 is: 346,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,338.94 : 554,996.78 = 251,173.50 : x
  2. Step 2: Convert to fraction form
    402,338.94/554,996.78 = 251,173.50/x
  3. Step 3: Cross multiply
    402,338.94x = 554,996.78 × 251,173.50
  4. Step 4: Simplify right side
    402,338.94x = 139,400,483,721.33
  5. Step 5: Solve for x
    x = 139,400,483,721.33/402,338.94
  6. Step 6: Final answer
    x = 346,475.25

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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.