Home / 208,999.83-288,421.45-113,507.21

Finding the Fourth Proportional to 208,999.83, 288,421.45 and 113,507.21

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Solution

The fourth proportional to 208,999.83, 288,421.45 and 113,507.21 is: 156,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,999.83 : 288,421.45 = 113,507.21 : x
  2. Step 2: Convert to fraction form
    208,999.83/288,421.45 = 113,507.21/x
  3. Step 3: Cross multiply
    208,999.83x = 288,421.45 × 113,507.21
  4. Step 4: Simplify right side
    208,999.83x = 32,737,912,935.32
  5. Step 5: Solve for x
    x = 32,737,912,935.32/208,999.83
  6. Step 6: Final answer
    x = 156,640.86

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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.