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Finding the Fourth Proportional to 438,813.82, 605,575.02 and 247,855.60

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Solution

The fourth proportional to 438,813.82, 605,575.02 and 247,855.60 is: 342,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,813.82 : 605,575.02 = 247,855.60 : x
  2. Step 2: Convert to fraction form
    438,813.82/605,575.02 = 247,855.60/x
  3. Step 3: Cross multiply
    438,813.82x = 605,575.02 × 247,855.60
  4. Step 4: Simplify right side
    438,813.82x = 150,095,159,927.11
  5. Step 5: Solve for x
    x = 150,095,159,927.11/438,813.82
  6. Step 6: Final answer
    x = 342,047.48

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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.