Home / 208,731.86-287,872.12-160,450.64

Finding the Fourth Proportional to 208,731.86, 287,872.12 and 160,450.64

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Solution

The fourth proportional to 208,731.86, 287,872.12 and 160,450.64 is: 221,285.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,731.86 : 287,872.12 = 160,450.64 : x
  2. Step 2: Convert to fraction form
    208,731.86/287,872.12 = 160,450.64/x
  3. Step 3: Cross multiply
    208,731.86x = 287,872.12 × 160,450.64
  4. Step 4: Simplify right side
    208,731.86x = 46,189,265,892.16
  5. Step 5: Solve for x
    x = 46,189,265,892.16/208,731.86
  6. Step 6: Final answer
    x = 221,285.17

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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.