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Finding the Fourth Proportional to 438,756.77, 605,484.38 and 247,782.47

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Solution

The fourth proportional to 438,756.77, 605,484.38 and 247,782.47 is: 341,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,756.77 : 605,484.38 = 247,782.47 : x
  2. Step 2: Convert to fraction form
    438,756.77/605,484.38 = 247,782.47/x
  3. Step 3: Cross multiply
    438,756.77x = 605,484.38 × 247,782.47
  4. Step 4: Simplify right side
    438,756.77x = 150,028,412,814.85
  5. Step 5: Solve for x
    x = 150,028,412,814.85/438,756.77
  6. Step 6: Final answer
    x = 341,939.82

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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.