Home / 287,601,063.71-431,419,756.37-121,573,609.65

Finding the Fourth Proportional to 287,601,063.71, 431,419,756.37 and 121,573,609.65

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Solution

The fourth proportional to 287,601,063.71, 431,419,756.37 and 121,573,609.65 is: 182,368,091.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,601,063.71 : 431,419,756.37 = 121,573,609.65 : x
  2. Step 2: Convert to fraction form
    287,601,063.71/431,419,756.37 = 121,573,609.65/x
  3. Step 3: Cross multiply
    287,601,063.71x = 431,419,756.37 × 121,573,609.65
  4. Step 4: Simplify right side
    287,601,063.71x = 52,449,257,055,616,616
  5. Step 5: Solve for x
    x = 52,449,257,055,616,616/287,601,063.71
  6. Step 6: Final answer
    x = 182,368,091.34

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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.