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Finding the Fourth Proportional to 221,238,056.70, 309,159,323.10 and 221,238,056.70

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Solution

The fourth proportional to 221,238,056.70, 309,159,323.10 and 221,238,056.70 is: 309,159,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,238,056.70 : 309,159,323.10 = 221,238,056.70 : x
  2. Step 2: Convert to fraction form
    221,238,056.70/309,159,323.10 = 221,238,056.70/x
  3. Step 3: Cross multiply
    221,238,056.70x = 309,159,323.10 × 221,238,056.70
  4. Step 4: Simplify right side
    221,238,056.70x = 68,397,807,853,331,424
  5. Step 5: Solve for x
    x = 68,397,807,853,331,424/221,238,056.70
  6. Step 6: Final answer
    x = 309,159,323.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.