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Finding the Fourth Proportional to 201,854,287.96, 278,559,039.42 and 109,034,836.81

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Solution

The fourth proportional to 201,854,287.96, 278,559,039.42 and 109,034,836.81 is: 150,468,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,854,287.96 : 278,559,039.42 = 109,034,836.81 : x
  2. Step 2: Convert to fraction form
    201,854,287.96/278,559,039.42 = 109,034,836.81/x
  3. Step 3: Cross multiply
    201,854,287.96x = 278,559,039.42 × 109,034,836.81
  4. Step 4: Simplify right side
    201,854,287.96x = 30,372,639,405,110,060
  5. Step 5: Solve for x
    x = 30,372,639,405,110,060/201,854,287.96
  6. Step 6: Final answer
    x = 150,468,140.72

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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.