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Finding the Fourth Proportional to 208,133.97, 287,224.90 and 112,640.67

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Solution

The fourth proportional to 208,133.97, 287,224.90 and 112,640.67 is: 155,444.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,133.97 : 287,224.90 = 112,640.67 : x
  2. Step 2: Convert to fraction form
    208,133.97/287,224.90 = 112,640.67/x
  3. Step 3: Cross multiply
    208,133.97x = 287,224.90 × 112,640.67
  4. Step 4: Simplify right side
    208,133.97x = 32,353,204,720.87
  5. Step 5: Solve for x
    x = 32,353,204,720.87/208,133.97
  6. Step 6: Final answer
    x = 155,444.13

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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.