Home / 208,651,561.20-312,977,341.80-72,291,625.20

Finding the Fourth Proportional to 208,651,561.20, 312,977,341.80 and 72,291,625.20

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Solution

The fourth proportional to 208,651,561.20, 312,977,341.80 and 72,291,625.20 is: 108,437,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,651,561.20 : 312,977,341.80 = 72,291,625.20 : x
  2. Step 2: Convert to fraction form
    208,651,561.20/312,977,341.80 = 72,291,625.20/x
  3. Step 3: Cross multiply
    208,651,561.20x = 312,977,341.80 × 72,291,625.20
  4. Step 4: Simplify right side
    208,651,561.20x = 22,625,640,689,497,896
  5. Step 5: Solve for x
    x = 22,625,640,689,497,896/208,651,561.20
  6. Step 6: Final answer
    x = 108,437,437.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.