Home / 256,608,855.20-384,928,028.40-74,884,080.80

Finding the Fourth Proportional to 256,608,855.20, 384,928,028.40 and 74,884,080.80

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Solution

The fourth proportional to 256,608,855.20, 384,928,028.40 and 74,884,080.80 is: 112,330,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,608,855.20 : 384,928,028.40 = 74,884,080.80 : x
  2. Step 2: Convert to fraction form
    256,608,855.20/384,928,028.40 = 74,884,080.80/x
  3. Step 3: Cross multiply
    256,608,855.20x = 384,928,028.40 × 74,884,080.80
  4. Step 4: Simplify right side
    256,608,855.20x = 28,824,981,580,890,292
  5. Step 5: Solve for x
    x = 28,824,981,580,890,292/256,608,855.20
  6. Step 6: Final answer
    x = 112,330,424.29

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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.