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Finding the Fourth Proportional to 409,068,448.54, 613,688,849.70 and 132,698,082.88

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Solution

The fourth proportional to 409,068,448.54, 613,688,849.70 and 132,698,082.88 is: 199,075,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,068,448.54 : 613,688,849.70 = 132,698,082.88 : x
  2. Step 2: Convert to fraction form
    409,068,448.54/613,688,849.70 = 132,698,082.88/x
  3. Step 3: Cross multiply
    409,068,448.54x = 613,688,849.70 × 132,698,082.88
  4. Step 4: Simplify right side
    409,068,448.54x = 81,435,333,840,022,464
  5. Step 5: Solve for x
    x = 81,435,333,840,022,464/409,068,448.54
  6. Step 6: Final answer
    x = 199,075,079.32

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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.