Home / 208,108,339.65-287,207,144.73-115,317,953.73

Finding the Fourth Proportional to 208,108,339.65, 287,207,144.73 and 115,317,953.73

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Solution

The fourth proportional to 208,108,339.65, 287,207,144.73 and 115,317,953.73 is: 159,148,548.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,108,339.65 : 287,207,144.73 = 115,317,953.73 : x
  2. Step 2: Convert to fraction form
    208,108,339.65/287,207,144.73 = 115,317,953.73/x
  3. Step 3: Cross multiply
    208,108,339.65x = 287,207,144.73 × 115,317,953.73
  4. Step 4: Simplify right side
    208,108,339.65x = 33,120,140,226,899,556
  5. Step 5: Solve for x
    x = 33,120,140,226,899,556/208,108,339.65
  6. Step 6: Final answer
    x = 159,148,548.70

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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.