Home / 208,108,336.15-287,207,139.90-115,317,950.23

Finding the Fourth Proportional to 208,108,336.15, 287,207,139.90 and 115,317,950.23

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Solution

The fourth proportional to 208,108,336.15, 287,207,139.90 and 115,317,950.23 is: 159,148,543.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,108,336.15 : 287,207,139.90 = 115,317,950.23 : x
  2. Step 2: Convert to fraction form
    208,108,336.15/287,207,139.90 = 115,317,950.23/x
  3. Step 3: Cross multiply
    208,108,336.15x = 287,207,139.90 × 115,317,950.23
  4. Step 4: Simplify right side
    208,108,336.15x = 33,120,138,664,688,844
  5. Step 5: Solve for x
    x = 33,120,138,664,688,844/208,108,336.15
  6. Step 6: Final answer
    x = 159,148,543.87

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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.