Home / 208,632,004.10-287,897,763.60-115,805,204.63

Finding the Fourth Proportional to 208,632,004.10, 287,897,763.60 and 115,805,204.63

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Solution

The fourth proportional to 208,632,004.10, 287,897,763.60 and 115,805,204.63 is: 159,803,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,632,004.10 : 287,897,763.60 = 115,805,204.63 : x
  2. Step 2: Convert to fraction form
    208,632,004.10/287,897,763.60 = 115,805,204.63/x
  3. Step 3: Cross multiply
    208,632,004.10x = 287,897,763.60 × 115,805,204.63
  4. Step 4: Simplify right side
    208,632,004.10x = 33,340,059,424,777,880
  5. Step 5: Solve for x
    x = 33,340,059,424,777,880/208,632,004.10
  6. Step 6: Final answer
    x = 159,803,188.25

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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.