Home / 287,428,504.05-431,142,756.08-103,284,197.55

Finding the Fourth Proportional to 287,428,504.05, 431,142,756.08 and 103,284,197.55

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Solution

The fourth proportional to 287,428,504.05, 431,142,756.08 and 103,284,197.55 is: 154,926,296.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,428,504.05 : 431,142,756.08 = 103,284,197.55 : x
  2. Step 2: Convert to fraction form
    287,428,504.05/431,142,756.08 = 103,284,197.55/x
  3. Step 3: Cross multiply
    287,428,504.05x = 431,142,756.08 × 103,284,197.55
  4. Step 4: Simplify right side
    287,428,504.05x = 44,530,233,590,701,760
  5. Step 5: Solve for x
    x = 44,530,233,590,701,760/287,428,504.05
  6. Step 6: Final answer
    x = 154,926,296.33

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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.