Home / 262,626,769.60-393,940,154.40-80,929,643.20

Finding the Fourth Proportional to 262,626,769.60, 393,940,154.40 and 80,929,643.20

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Solution

The fourth proportional to 262,626,769.60, 393,940,154.40 and 80,929,643.20 is: 121,394,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,626,769.60 : 393,940,154.40 = 80,929,643.20 : x
  2. Step 2: Convert to fraction form
    262,626,769.60/393,940,154.40 = 80,929,643.20/x
  3. Step 3: Cross multiply
    262,626,769.60x = 393,940,154.40 × 80,929,643.20
  4. Step 4: Simplify right side
    262,626,769.60x = 31,881,436,137,744,908
  5. Step 5: Solve for x
    x = 31,881,436,137,744,908/262,626,769.60
  6. Step 6: Final answer
    x = 121,394,464.80

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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.