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Finding the Fourth Proportional to 406,972.80, 610,313.40 and 207,226.80

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Solution

The fourth proportional to 406,972.80, 610,313.40 and 207,226.80 is: 310,765.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,972.80 : 610,313.40 = 207,226.80 : x
  2. Step 2: Convert to fraction form
    406,972.80/610,313.40 = 207,226.80/x
  3. Step 3: Cross multiply
    406,972.80x = 610,313.40 × 207,226.80
  4. Step 4: Simplify right side
    406,972.80x = 126,473,292,879.12
  5. Step 5: Solve for x
    x = 126,473,292,879.12/406,972.80
  6. Step 6: Final answer
    x = 310,765.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.