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Finding the Fourth Proportional to 406,012.80, 560,410.12 and 236,279.60

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Solution

The fourth proportional to 406,012.80, 560,410.12 and 236,279.60 is: 326,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,012.80 : 560,410.12 = 236,279.60 : x
  2. Step 2: Convert to fraction form
    406,012.80/560,410.12 = 236,279.60/x
  3. Step 3: Cross multiply
    406,012.80x = 560,410.12 × 236,279.60
  4. Step 4: Simplify right side
    406,012.80x = 132,413,478,989.55
  5. Step 5: Solve for x
    x = 132,413,478,989.55/406,012.80
  6. Step 6: Final answer
    x = 326,131.29

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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.