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Finding the Fourth Proportional to 375,719,731.91, 518,475,663.69 and 208,454,213.00

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Solution

The fourth proportional to 375,719,731.91, 518,475,663.69 and 208,454,213.00 is: 287,657,067.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,719,731.91 : 518,475,663.69 = 208,454,213.00 : x
  2. Step 2: Convert to fraction form
    375,719,731.91/518,475,663.69 = 208,454,213.00/x
  3. Step 3: Cross multiply
    375,719,731.91x = 518,475,663.69 × 208,454,213.00
  4. Step 4: Simplify right side
    375,719,731.91x = 108,078,436,436,423,376
  5. Step 5: Solve for x
    x = 108,078,436,436,423,376/375,719,731.91
  6. Step 6: Final answer
    x = 287,657,067.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.