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Finding the Fourth Proportional to 212,616,220.80, 298,468,924.80 and 212,616,220.80

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Solution

The fourth proportional to 212,616,220.80, 298,468,924.80 and 212,616,220.80 is: 298,468,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,616,220.80 : 298,468,924.80 = 212,616,220.80 : x
  2. Step 2: Convert to fraction form
    212,616,220.80/298,468,924.80 = 212,616,220.80/x
  3. Step 3: Cross multiply
    212,616,220.80x = 298,468,924.80 × 212,616,220.80
  4. Step 4: Simplify right side
    212,616,220.80x = 63,459,334,817,215,400
  5. Step 5: Solve for x
    x = 63,459,334,817,215,400/212,616,220.80
  6. Step 6: Final answer
    x = 298,468,924.80

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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.