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Finding the Fourth Proportional to 402,443.57, 555,140.86 and 251,278.13

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Solution

The fourth proportional to 402,443.57, 555,140.86 and 251,278.13 is: 346,619.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,443.57 : 555,140.86 = 251,278.13 : x
  2. Step 2: Convert to fraction form
    402,443.57/555,140.86 = 251,278.13/x
  3. Step 3: Cross multiply
    402,443.57x = 555,140.86 × 251,278.13
  4. Step 4: Simplify right side
    402,443.57x = 139,494,757,187.39
  5. Step 5: Solve for x
    x = 139,494,757,187.39/402,443.57
  6. Step 6: Final answer
    x = 346,619.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.