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Finding the Fourth Proportional to 208,114.20, 287,199.72 and 112,623.12

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Solution

The fourth proportional to 208,114.20, 287,199.72 and 112,623.12 is: 155,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,114.20 : 287,199.72 = 112,623.12 : x
  2. Step 2: Convert to fraction form
    208,114.20/287,199.72 = 112,623.12/x
  3. Step 3: Cross multiply
    208,114.20x = 287,199.72 × 112,623.12
  4. Step 4: Simplify right side
    208,114.20x = 32,345,328,529.53
  5. Step 5: Solve for x
    x = 32,345,328,529.53/208,114.20
  6. Step 6: Final answer
    x = 155,421.06

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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.