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Finding the Fourth Proportional to 210,622,617.90, 315,367,056.45 and 210,622,617.90

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Solution

The fourth proportional to 210,622,617.90, 315,367,056.45 and 210,622,617.90 is: 315,367,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,622,617.90 : 315,367,056.45 = 210,622,617.90 : x
  2. Step 2: Convert to fraction form
    210,622,617.90/315,367,056.45 = 210,622,617.90/x
  3. Step 3: Cross multiply
    210,622,617.90x = 315,367,056.45 × 210,622,617.90
  4. Step 4: Simplify right side
    210,622,617.90x = 66,423,435,028,916,080
  5. Step 5: Solve for x
    x = 66,423,435,028,916,080/210,622,617.90
  6. Step 6: Final answer
    x = 315,367,056.45

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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.