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Finding the Fourth Proportional to 208,673.67, 287,655.69 and 163,272.81

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Solution

The fourth proportional to 208,673.67, 287,655.69 and 163,272.81 is: 225,070.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,673.67 : 287,655.69 = 163,272.81 : x
  2. Step 2: Convert to fraction form
    208,673.67/287,655.69 = 163,272.81/x
  3. Step 3: Cross multiply
    208,673.67x = 287,655.69 × 163,272.81
  4. Step 4: Simplify right side
    208,673.67x = 46,966,352,818.79
  5. Step 5: Solve for x
    x = 46,966,352,818.79/208,673.67
  6. Step 6: Final answer
    x = 225,070.81

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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.