Home / 208,811.12-288,159.34-113,317.82

Finding the Fourth Proportional to 208,811.12, 288,159.34 and 113,317.82

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Solution

The fourth proportional to 208,811.12, 288,159.34 and 113,317.82 is: 156,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,811.12 : 288,159.34 = 113,317.82 : x
  2. Step 2: Convert to fraction form
    208,811.12/288,159.34 = 113,317.82/x
  3. Step 3: Cross multiply
    208,811.12x = 288,159.34 × 113,317.82
  4. Step 4: Simplify right side
    208,811.12x = 32,653,588,221.44
  5. Step 5: Solve for x
    x = 32,653,588,221.44/208,811.12
  6. Step 6: Final answer
    x = 156,378.59

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1.5x scale

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.