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Finding the Fourth Proportional to 218,807,066.40, 328,227,978.96 and 73,241,396.16

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Solution

The fourth proportional to 218,807,066.40, 328,227,978.96 and 73,241,396.16 is: 109,867,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,807,066.40 : 328,227,978.96 = 73,241,396.16 : x
  2. Step 2: Convert to fraction form
    218,807,066.40/328,227,978.96 = 73,241,396.16/x
  3. Step 3: Cross multiply
    218,807,066.40x = 328,227,978.96 × 73,241,396.16
  4. Step 4: Simplify right side
    218,807,066.40x = 24,039,875,437,805,504
  5. Step 5: Solve for x
    x = 24,039,875,437,805,504/218,807,066.40
  6. Step 6: Final answer
    x = 109,867,911.64

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