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Finding the Fourth Proportional to 208,182.70, 312,050.40 and 89,909.74

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Solution

The fourth proportional to 208,182.70, 312,050.40 and 89,909.74 is: 134,768.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,182.70 : 312,050.40 = 89,909.74 : x
  2. Step 2: Convert to fraction form
    208,182.70/312,050.40 = 89,909.74/x
  3. Step 3: Cross multiply
    208,182.70x = 312,050.40 × 89,909.74
  4. Step 4: Simplify right side
    208,182.70x = 28,056,370,330.90
  5. Step 5: Solve for x
    x = 28,056,370,330.90/208,182.70
  6. Step 6: Final answer
    x = 134,768.02

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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.