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Finding the Fourth Proportional to 438,415.50, 605,013.81 and 247,424.79

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Solution

The fourth proportional to 438,415.50, 605,013.81 and 247,424.79 is: 341,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,415.50 : 605,013.81 = 247,424.79 : x
  2. Step 2: Convert to fraction form
    438,415.50/605,013.81 = 247,424.79/x
  3. Step 3: Cross multiply
    438,415.50x = 605,013.81 × 247,424.79
  4. Step 4: Simplify right side
    438,415.50x = 149,695,414,886.35
  5. Step 5: Solve for x
    x = 149,695,414,886.35/438,415.50
  6. Step 6: Final answer
    x = 341,446.45

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1.5x scale

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.