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Finding the Fourth Proportional to 336,888,009.60, 505,332,014.40 and 205,940,947.20

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Solution

The fourth proportional to 336,888,009.60, 505,332,014.40 and 205,940,947.20 is: 308,911,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,888,009.60 : 505,332,014.40 = 205,940,947.20 : x
  2. Step 2: Convert to fraction form
    336,888,009.60/505,332,014.40 = 205,940,947.20/x
  3. Step 3: Cross multiply
    336,888,009.60x = 505,332,014.40 × 205,940,947.20
  4. Step 4: Simplify right side
    336,888,009.60x = 104,068,553,696,020,032
  5. Step 5: Solve for x
    x = 104,068,553,696,020,032/336,888,009.60
  6. Step 6: Final answer
    x = 308,911,420.80

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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.