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Finding the Fourth Proportional to 375,874,071.90, 518,709,758.95 and 210,865,184.34

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Solution

The fourth proportional to 375,874,071.90, 518,709,758.95 and 210,865,184.34 is: 290,995,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,874,071.90 : 518,709,758.95 = 210,865,184.34 : x
  2. Step 2: Convert to fraction form
    375,874,071.90/518,709,758.95 = 210,865,184.34/x
  3. Step 3: Cross multiply
    375,874,071.90x = 518,709,758.95 × 210,865,184.34
  4. Step 4: Simplify right side
    375,874,071.90x = 109,377,828,939,948,720
  5. Step 5: Solve for x
    x = 109,377,828,939,948,720/375,874,071.90
  6. Step 6: Final answer
    x = 290,995,940.18

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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.