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Finding the Fourth Proportional to 215,319,333.10, 322,978,999.65 and 100,528,077.10

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Solution

The fourth proportional to 215,319,333.10, 322,978,999.65 and 100,528,077.10 is: 150,792,115.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,319,333.10 : 322,978,999.65 = 100,528,077.10 : x
  2. Step 2: Convert to fraction form
    215,319,333.10/322,978,999.65 = 100,528,077.10/x
  3. Step 3: Cross multiply
    215,319,333.10x = 322,978,999.65 × 100,528,077.10
  4. Step 4: Simplify right side
    215,319,333.10x = 32,468,457,778,496,068
  5. Step 5: Solve for x
    x = 32,468,457,778,496,068/215,319,333.10
  6. Step 6: Final answer
    x = 150,792,115.65

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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.