Home / 278,782,102.20-385,112,709.72-223,395,452.40

Finding the Fourth Proportional to 278,782,102.20, 385,112,709.72 and 223,395,452.40

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Solution

The fourth proportional to 278,782,102.20, 385,112,709.72 and 223,395,452.40 is: 308,600,973.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,782,102.20 : 385,112,709.72 = 223,395,452.40 : x
  2. Step 2: Convert to fraction form
    278,782,102.20/385,112,709.72 = 223,395,452.40/x
  3. Step 3: Cross multiply
    278,782,102.20x = 385,112,709.72 × 223,395,452.40
  4. Step 4: Simplify right side
    278,782,102.20x = 86,032,428,012,889,280
  5. Step 5: Solve for x
    x = 86,032,428,012,889,280/278,782,102.20
  6. Step 6: Final answer
    x = 308,600,973.07

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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.