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Finding the Fourth Proportional to 406,397.40, 560,832.48 and 245,221.44

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Solution

The fourth proportional to 406,397.40, 560,832.48 and 245,221.44 is: 338,408.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,397.40 : 560,832.48 = 245,221.44 : x
  2. Step 2: Convert to fraction form
    406,397.40/560,832.48 = 245,221.44/x
  3. Step 3: Cross multiply
    406,397.40x = 560,832.48 × 245,221.44
  4. Step 4: Simplify right side
    406,397.40x = 137,528,148,344.37
  5. Step 5: Solve for x
    x = 137,528,148,344.37/406,397.40
  6. Step 6: Final answer
    x = 338,408.04

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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.