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Finding the Fourth Proportional to 438,887.69, 605,613.94 and 245,295.80

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Solution

The fourth proportional to 438,887.69, 605,613.94 and 245,295.80 is: 338,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,887.69 : 605,613.94 = 245,295.80 : x
  2. Step 2: Convert to fraction form
    438,887.69/605,613.94 = 245,295.80/x
  3. Step 3: Cross multiply
    438,887.69x = 605,613.94 × 245,295.80
  4. Step 4: Simplify right side
    438,887.69x = 148,554,555,903.45
  5. Step 5: Solve for x
    x = 148,554,555,903.45/438,887.69
  6. Step 6: Final answer
    x = 338,479.66

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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.