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Finding the Fourth Proportional to 363,792,903.90, 545,694,021.45 and 121,455,807.90

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Solution

The fourth proportional to 363,792,903.90, 545,694,021.45 and 121,455,807.90 is: 182,185,269.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,792,903.90 : 545,694,021.45 = 121,455,807.90 : x
  2. Step 2: Convert to fraction form
    363,792,903.90/545,694,021.45 = 121,455,807.90/x
  3. Step 3: Cross multiply
    363,792,903.90x = 545,694,021.45 × 121,455,807.90
  4. Step 4: Simplify right side
    363,792,903.90x = 66,277,708,241,409,688
  5. Step 5: Solve for x
    x = 66,277,708,241,409,688/363,792,903.90
  6. Step 6: Final answer
    x = 182,185,269.51

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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.