Home / 287,428,537.80-431,142,806.70-103,284,231.30

Finding the Fourth Proportional to 287,428,537.80, 431,142,806.70 and 103,284,231.30

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Solution

The fourth proportional to 287,428,537.80, 431,142,806.70 and 103,284,231.30 is: 154,926,346.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,428,537.80 : 431,142,806.70 = 103,284,231.30 : x
  2. Step 2: Convert to fraction form
    287,428,537.80/431,142,806.70 = 103,284,231.30/x
  3. Step 3: Cross multiply
    287,428,537.80x = 431,142,806.70 × 103,284,231.30
  4. Step 4: Simplify right side
    287,428,537.80x = 44,530,253,370,533,984
  5. Step 5: Solve for x
    x = 44,530,253,370,533,984/287,428,537.80
  6. Step 6: Final answer
    x = 154,926,346.95

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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.