Home / 208,810.91-288,159.24-113,317.61

Finding the Fourth Proportional to 208,810.91, 288,159.24 and 113,317.61

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Solution

The fourth proportional to 208,810.91, 288,159.24 and 113,317.61 is: 156,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,810.91 : 288,159.24 = 113,317.61 : x
  2. Step 2: Convert to fraction form
    208,810.91/288,159.24 = 113,317.61/x
  3. Step 3: Cross multiply
    208,810.91x = 288,159.24 × 113,317.61
  4. Step 4: Simplify right side
    208,810.91x = 32,653,514,935.42
  5. Step 5: Solve for x
    x = 32,653,514,935.42/208,810.91
  6. Step 6: Final answer
    x = 156,378.40

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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.