Home / 278,782,099.20-385,112,705.58-223,395,449.40

Finding the Fourth Proportional to 278,782,099.20, 385,112,705.58 and 223,395,449.40

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Solution

The fourth proportional to 278,782,099.20, 385,112,705.58 and 223,395,449.40 is: 308,600,968.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,782,099.20 : 385,112,705.58 = 223,395,449.40 : x
  2. Step 2: Convert to fraction form
    278,782,099.20/385,112,705.58 = 223,395,449.40/x
  3. Step 3: Cross multiply
    278,782,099.20x = 385,112,705.58 × 223,395,449.40
  4. Step 4: Simplify right side
    278,782,099.20x = 86,032,425,932,693,984
  5. Step 5: Solve for x
    x = 86,032,425,932,693,984/278,782,099.20
  6. Step 6: Final answer
    x = 308,600,968.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.