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Finding the Fourth Proportional to 570,651,973.92, 855,708,168.24 and 221,061,780.36

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Solution

The fourth proportional to 570,651,973.92, 855,708,168.24 and 221,061,780.36 is: 331,488,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,651,973.92 : 855,708,168.24 = 221,061,780.36 : x
  2. Step 2: Convert to fraction form
    570,651,973.92/855,708,168.24 = 221,061,780.36/x
  3. Step 3: Cross multiply
    570,651,973.92x = 855,708,168.24 × 221,061,780.36
  4. Step 4: Simplify right side
    570,651,973.92x = 189,164,371,139,728,832
  5. Step 5: Solve for x
    x = 189,164,371,139,728,832/570,651,973.92
  6. Step 6: Final answer
    x = 331,488,157.03

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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.