Home / 208,214,969.80-287,336,685.56-115,401,469.72

Finding the Fourth Proportional to 208,214,969.80, 287,336,685.56 and 115,401,469.72

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Solution

The fourth proportional to 208,214,969.80, 287,336,685.56 and 115,401,469.72 is: 159,254,043.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,214,969.80 : 287,336,685.56 = 115,401,469.72 : x
  2. Step 2: Convert to fraction form
    208,214,969.80/287,336,685.56 = 115,401,469.72/x
  3. Step 3: Cross multiply
    208,214,969.80x = 287,336,685.56 × 115,401,469.72
  4. Step 4: Simplify right side
    208,214,969.80x = 33,159,075,818,097,500
  5. Step 5: Solve for x
    x = 33,159,075,818,097,500/208,214,969.80
  6. Step 6: Final answer
    x = 159,254,043.31

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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.