Home / 438,455.36-605,039.82-247,442.78

Finding the Fourth Proportional to 438,455.36, 605,039.82 and 247,442.78

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Solution

The fourth proportional to 438,455.36, 605,039.82 and 247,442.78 is: 341,454.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,455.36 : 605,039.82 = 247,442.78 : x
  2. Step 2: Convert to fraction form
    438,455.36/605,039.82 = 247,442.78/x
  3. Step 3: Cross multiply
    438,455.36x = 605,039.82 × 247,442.78
  4. Step 4: Simplify right side
    438,455.36x = 149,712,735,071.50
  5. Step 5: Solve for x
    x = 149,712,735,071.50/438,455.36
  6. Step 6: Final answer
    x = 341,454.91

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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.