Home / 208,108,337.15-287,207,141.28-115,317,951.23

Finding the Fourth Proportional to 208,108,337.15, 287,207,141.28 and 115,317,951.23

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Solution

The fourth proportional to 208,108,337.15, 287,207,141.28 and 115,317,951.23 is: 159,148,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,108,337.15 : 287,207,141.28 = 115,317,951.23 : x
  2. Step 2: Convert to fraction form
    208,108,337.15/287,207,141.28 = 115,317,951.23/x
  3. Step 3: Cross multiply
    208,108,337.15x = 287,207,141.28 × 115,317,951.23
  4. Step 4: Simplify right side
    208,108,337.15x = 33,120,139,111,034,756
  5. Step 5: Solve for x
    x = 33,120,139,111,034,756/208,108,337.15
  6. Step 6: Final answer
    x = 159,148,545.25

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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.