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Finding the Fourth Proportional to 265,781,212.80, 398,671,819.20 and 265,781,212.80

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Solution

The fourth proportional to 265,781,212.80, 398,671,819.20 and 265,781,212.80 is: 398,671,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,781,212.80 : 398,671,819.20 = 265,781,212.80 : x
  2. Step 2: Convert to fraction form
    265,781,212.80/398,671,819.20 = 265,781,212.80/x
  3. Step 3: Cross multiply
    265,781,212.80x = 398,671,819.20 × 265,781,212.80
  4. Step 4: Simplify right side
    265,781,212.80x = 105,959,479,616,158,320
  5. Step 5: Solve for x
    x = 105,959,479,616,158,320/265,781,212.80
  6. Step 6: Final answer
    x = 398,671,819.20

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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.