Home / 287,511,239.63-431,094,239.52-131,870,082.26

Finding the Fourth Proportional to 287,511,239.63, 431,094,239.52 and 131,870,082.26

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Solution

The fourth proportional to 287,511,239.63, 431,094,239.52 and 131,870,082.26 is: 197,725,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,511,239.63 : 431,094,239.52 = 131,870,082.26 : x
  2. Step 2: Convert to fraction form
    287,511,239.63/431,094,239.52 = 131,870,082.26/x
  3. Step 3: Cross multiply
    287,511,239.63x = 431,094,239.52 × 131,870,082.26
  4. Step 4: Simplify right side
    287,511,239.63x = 56,848,432,825,159,064
  5. Step 5: Solve for x
    x = 56,848,432,825,159,064/287,511,239.63
  6. Step 6: Final answer
    x = 197,725,949.42

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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.