Home / 208,651,520.70-312,977,281.05-72,291,584.70

Finding the Fourth Proportional to 208,651,520.70, 312,977,281.05 and 72,291,584.70

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Solution

The fourth proportional to 208,651,520.70, 312,977,281.05 and 72,291,584.70 is: 108,437,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,651,520.70 : 312,977,281.05 = 72,291,584.70 : x
  2. Step 2: Convert to fraction form
    208,651,520.70/312,977,281.05 = 72,291,584.70/x
  3. Step 3: Cross multiply
    208,651,520.70x = 312,977,281.05 × 72,291,584.70
  4. Step 4: Simplify right side
    208,651,520.70x = 22,625,623,622,201,780
  5. Step 5: Solve for x
    x = 22,625,623,622,201,780/208,651,520.70
  6. Step 6: Final answer
    x = 108,437,377.05

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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.