Home / 208,214,977.30-287,336,695.89-115,401,477.22

Finding the Fourth Proportional to 208,214,977.30, 287,336,695.89 and 115,401,477.22

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Solution

The fourth proportional to 208,214,977.30, 287,336,695.89 and 115,401,477.22 is: 159,254,053.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,214,977.30 : 287,336,695.89 = 115,401,477.22 : x
  2. Step 2: Convert to fraction form
    208,214,977.30/287,336,695.89 = 115,401,477.22/x
  3. Step 3: Cross multiply
    208,214,977.30x = 287,336,695.89 × 115,401,477.22
  4. Step 4: Simplify right side
    208,214,977.30x = 33,159,079,165,219,900
  5. Step 5: Solve for x
    x = 33,159,079,165,219,900/208,214,977.30
  6. Step 6: Final answer
    x = 159,254,053.65

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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.