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Finding the Fourth Proportional to 671,976,246.30, 1,007,964,369.45 and 211,960,916.70

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Solution

The fourth proportional to 671,976,246.30, 1,007,964,369.45 and 211,960,916.70 is: 317,941,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,976,246.30 : 1,007,964,369.45 = 211,960,916.70 : x
  2. Step 2: Convert to fraction form
    671,976,246.30/1,007,964,369.45 = 211,960,916.70/x
  3. Step 3: Cross multiply
    671,976,246.30x = 1,007,964,369.45 × 211,960,916.70
  4. Step 4: Simplify right side
    671,976,246.30x = 213,649,051,749,559,488
  5. Step 5: Solve for x
    x = 213,649,051,749,559,488/671,976,246.30
  6. Step 6: Final answer
    x = 317,941,375.05

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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.