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Finding the Fourth Proportional to 375,874,066.65, 518,709,751.71 and 210,865,179.09

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Solution

The fourth proportional to 375,874,066.65, 518,709,751.71 and 210,865,179.09 is: 290,995,932.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,874,066.65 : 518,709,751.71 = 210,865,179.09 : x
  2. Step 2: Convert to fraction form
    375,874,066.65/518,709,751.71 = 210,865,179.09/x
  3. Step 3: Cross multiply
    375,874,066.65x = 518,709,751.71 × 210,865,179.09
  4. Step 4: Simplify right side
    375,874,066.65x = 109,377,824,690,058,576
  5. Step 5: Solve for x
    x = 109,377,824,690,058,576/375,874,066.65
  6. Step 6: Final answer
    x = 290,995,932.93

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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.