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Finding the Fourth Proportional to 316,679,820.20, 475,019,730.30 and 316,679,820.20

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Solution

The fourth proportional to 316,679,820.20, 475,019,730.30 and 316,679,820.20 is: 475,019,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,679,820.20 : 475,019,730.30 = 316,679,820.20 : x
  2. Step 2: Convert to fraction form
    316,679,820.20/475,019,730.30 = 316,679,820.20/x
  3. Step 3: Cross multiply
    316,679,820.20x = 475,019,730.30 × 316,679,820.20
  4. Step 4: Simplify right side
    316,679,820.20x = 150,429,162,782,856,480
  5. Step 5: Solve for x
    x = 150,429,162,782,856,480/316,679,820.20
  6. Step 6: Final answer
    x = 475,019,730.30

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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.