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Finding the Fourth Proportional to 208,084.80, 287,156.30 and 112,591.07

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Solution

The fourth proportional to 208,084.80, 287,156.30 and 112,591.07 is: 155,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,084.80 : 287,156.30 = 112,591.07 : x
  2. Step 2: Convert to fraction form
    208,084.80/287,156.30 = 112,591.07/x
  3. Step 3: Cross multiply
    208,084.80x = 287,156.30 × 112,591.07
  4. Step 4: Simplify right side
    208,084.80x = 32,331,233,075.50
  5. Step 5: Solve for x
    x = 32,331,233,075.50/208,084.80
  6. Step 6: Final answer
    x = 155,375.28

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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.