Home / 208,397,356.18-312,643,649.31-72,082,624.66

Finding the Fourth Proportional to 208,397,356.18, 312,643,649.31 and 72,082,624.66

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Solution

The fourth proportional to 208,397,356.18, 312,643,649.31 and 72,082,624.66 is: 108,140,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,397,356.18 : 312,643,649.31 = 72,082,624.66 : x
  2. Step 2: Convert to fraction form
    208,397,356.18/312,643,649.31 = 72,082,624.66/x
  3. Step 3: Cross multiply
    208,397,356.18x = 312,643,649.31 × 72,082,624.66
  4. Step 4: Simplify right side
    208,397,356.18x = 22,536,174,825,545,396
  5. Step 5: Solve for x
    x = 22,536,174,825,545,396/208,397,356.18
  6. Step 6: Final answer
    x = 108,140,406.57

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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.