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Finding the Fourth Proportional to 208,093.76, 287,167.20 and 112,598.40

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Solution

The fourth proportional to 208,093.76, 287,167.20 and 112,598.40 is: 155,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,093.76 : 287,167.20 = 112,598.40 : x
  2. Step 2: Convert to fraction form
    208,093.76/287,167.20 = 112,598.40/x
  3. Step 3: Cross multiply
    208,093.76x = 287,167.20 × 112,598.40
  4. Step 4: Simplify right side
    208,093.76x = 32,334,567,252.48
  5. Step 5: Solve for x
    x = 32,334,567,252.48/208,093.76
  6. Step 6: Final answer
    x = 155,384.61

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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.