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Finding the Fourth Proportional to 406,987.40, 610,481.10 and 170,305.40

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Solution

The fourth proportional to 406,987.40, 610,481.10 and 170,305.40 is: 255,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,987.40 : 610,481.10 = 170,305.40 : x
  2. Step 2: Convert to fraction form
    406,987.40/610,481.10 = 170,305.40/x
  3. Step 3: Cross multiply
    406,987.40x = 610,481.10 × 170,305.40
  4. Step 4: Simplify right side
    406,987.40x = 103,968,227,927.94
  5. Step 5: Solve for x
    x = 103,968,227,927.94/406,987.40
  6. Step 6: Final answer
    x = 255,458.10

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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.