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Finding the Fourth Proportional to 208,281.78, 287,426.61 and 117,637.92

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Solution

The fourth proportional to 208,281.78, 287,426.61 and 117,637.92 is: 162,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,281.78 : 287,426.61 = 117,637.92 : x
  2. Step 2: Convert to fraction form
    208,281.78/287,426.61 = 117,637.92/x
  3. Step 3: Cross multiply
    208,281.78x = 287,426.61 × 117,637.92
  4. Step 4: Simplify right side
    208,281.78x = 33,812,268,553.05
  5. Step 5: Solve for x
    x = 33,812,268,553.05/208,281.78
  6. Step 6: Final answer
    x = 162,339.06

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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.