Home / 258,940,260.60-388,410,612.03-72,186,799.92

Finding the Fourth Proportional to 258,940,260.60, 388,410,612.03 and 72,186,799.92

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Solution

The fourth proportional to 258,940,260.60, 388,410,612.03 and 72,186,799.92 is: 108,280,261.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,940,260.60 : 388,410,612.03 = 72,186,799.92 : x
  2. Step 2: Convert to fraction form
    258,940,260.60/388,410,612.03 = 72,186,799.92/x
  3. Step 3: Cross multiply
    258,940,260.60x = 388,410,612.03 × 72,186,799.92
  4. Step 4: Simplify right side
    258,940,260.60x = 28,038,119,137,414,352
  5. Step 5: Solve for x
    x = 28,038,119,137,414,352/258,940,260.60
  6. Step 6: Final answer
    x = 108,280,261.53

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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.