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Finding the Fourth Proportional to 208,182.84, 287,293.74 and 112,689.78

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Solution

The fourth proportional to 208,182.84, 287,293.74 and 112,689.78 is: 155,512.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,182.84 : 287,293.74 = 112,689.78 : x
  2. Step 2: Convert to fraction form
    208,182.84/287,293.74 = 112,689.78/x
  3. Step 3: Cross multiply
    208,182.84x = 287,293.74 × 112,689.78
  4. Step 4: Simplify right side
    208,182.84x = 32,375,068,355.98
  5. Step 5: Solve for x
    x = 32,375,068,355.98/208,182.84
  6. Step 6: Final answer
    x = 155,512.67

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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.