Home / 208,209,585.85-287,329,231.56-115,396,072.40

Finding the Fourth Proportional to 208,209,585.85, 287,329,231.56 and 115,396,072.40

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Solution

The fourth proportional to 208,209,585.85, 287,329,231.56 and 115,396,072.40 is: 159,246,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,209,585.85 : 287,329,231.56 = 115,396,072.40 : x
  2. Step 2: Convert to fraction form
    208,209,585.85/287,329,231.56 = 115,396,072.40/x
  3. Step 3: Cross multiply
    208,209,585.85x = 287,329,231.56 × 115,396,072.40
  4. Step 4: Simplify right side
    208,209,585.85x = 33,156,664,807,734,128
  5. Step 5: Solve for x
    x = 33,156,664,807,734,128/208,209,585.85
  6. Step 6: Final answer
    x = 159,246,581.62

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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.