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Finding the Fourth Proportional to 208,313.34, 287,490.11 and 117,685.94

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Solution

The fourth proportional to 208,313.34, 287,490.11 and 117,685.94 is: 162,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,313.34 : 287,490.11 = 117,685.94 : x
  2. Step 2: Convert to fraction form
    208,313.34/287,490.11 = 117,685.94/x
  3. Step 3: Cross multiply
    208,313.34x = 287,490.11 × 117,685.94
  4. Step 4: Simplify right side
    208,313.34x = 33,833,543,836.05
  5. Step 5: Solve for x
    x = 33,833,543,836.05/208,313.34
  6. Step 6: Final answer
    x = 162,416.60

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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.