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Finding the Fourth Proportional to 201,854,309.02, 278,559,068.51 and 109,034,857.87

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Solution

The fourth proportional to 201,854,309.02, 278,559,068.51 and 109,034,857.87 is: 150,468,169.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,854,309.02 : 278,559,068.51 = 109,034,857.87 : x
  2. Step 2: Convert to fraction form
    201,854,309.02/278,559,068.51 = 109,034,857.87/x
  3. Step 3: Cross multiply
    201,854,309.02x = 278,559,068.51 × 109,034,857.87
  4. Step 4: Simplify right side
    201,854,309.02x = 30,372,648,442,963,632
  5. Step 5: Solve for x
    x = 30,372,648,442,963,632/201,854,309.02
  6. Step 6: Final answer
    x = 150,468,169.79

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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.