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Finding the Fourth Proportional to 406,990.08, 610,140.60 and 154,131.17

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Solution

The fourth proportional to 406,990.08, 610,140.60 and 154,131.17 is: 231,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,990.08 : 610,140.60 = 154,131.17 : x
  2. Step 2: Convert to fraction form
    406,990.08/610,140.60 = 154,131.17/x
  3. Step 3: Cross multiply
    406,990.08x = 610,140.60 × 154,131.17
  4. Step 4: Simplify right side
    406,990.08x = 94,041,681,491.80
  5. Step 5: Solve for x
    x = 94,041,681,491.80/406,990.08
  6. Step 6: Final answer
    x = 231,066.27

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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.