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Finding the Fourth Proportional to 208,324.17, 287,487.36 and 112,830.87

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Solution

The fourth proportional to 208,324.17, 287,487.36 and 112,830.87 is: 155,706.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,324.17 : 287,487.36 = 112,830.87 : x
  2. Step 2: Convert to fraction form
    208,324.17/287,487.36 = 112,830.87/x
  3. Step 3: Cross multiply
    208,324.17x = 287,487.36 × 112,830.87
  4. Step 4: Simplify right side
    208,324.17x = 32,437,448,942.80
  5. Step 5: Solve for x
    x = 32,437,448,942.80/208,324.17
  6. Step 6: Final answer
    x = 155,706.61

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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.