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Finding the Fourth Proportional to 221,616,016.10, 310,772,605.90 and 221,616,016.10

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Solution

The fourth proportional to 221,616,016.10, 310,772,605.90 and 221,616,016.10 is: 310,772,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,616,016.10 : 310,772,605.90 = 221,616,016.10 : x
  2. Step 2: Convert to fraction form
    221,616,016.10/310,772,605.90 = 221,616,016.10/x
  3. Step 3: Cross multiply
    221,616,016.10x = 310,772,605.90 × 221,616,016.10
  4. Step 4: Simplify right side
    221,616,016.10x = 68,872,186,832,573,344
  5. Step 5: Solve for x
    x = 68,872,186,832,573,344/221,616,016.10
  6. Step 6: Final answer
    x = 310,772,605.90

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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.